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1.
Ciênc. rural (Online) ; 53(2): e20210807, 2023. graf
Artigo em Inglês | LILACS-Express | VETINDEX | ID: biblio-1384554

Resumo

ABSTRACT: We described a case of rhinitis case caused by Exserohilum rostratum in a 3-year-old, mixed breed, afemale goat, presenting with decreased appetite, dyspnea, and face deformity, with evolution of approximately 2 months. Necropsy revealed an extensive brownish yellow, irregular, ulcerated, and friable focal lesion in the nasal cavity. Purulent secretion drained from the lesion, affecting the nasal vestibule and extending the caudal portion of the dorsal concha, associated with nasal meatus obstruction, destruction of the nasal septum, and nasal bone palatine and vomer. Histologically, the lesion was characterized as rhinitis and pyogranulomatous and necrotizing osteomyelitis (multifocal to coalescent, sharp, and chronic) and associated with a myriad of fungal structures. Morphologically, the hyphae were characterized by thin, slightly tortuous, and rarely septate walls (2-6 μm diameter), multiple chains of individual conidia or in groups (8-10 μm diameter), and pigmented chlamydoconidia (7.5-15 μm diameter). They showed positive results for the special histochemical techniques such as Fontana Masson, methenamine silver nitrate by Grocott, and periodic acid by Schiff. E. rostratum was identified as the causative agent using microbiological isolation associated with molecular identification. Pyrogranulomatous rhinitis caused by E. rostratum in goats is unprecedented, being the first isolation of the agent in animals in Brazil and the first case of nasal phaeohyphomycosis in the goats.


RESUMO: Descreve-se um caso de rinite por Exserohilum rostratum em um caprino, sem raça definida, fêmea, três anos, com diminuição do apetite, dispneia e deformidade facial, com evolução de aproximadamente dois meses. Durante a necropsia, observou-se que na cavidade nasal havia área focal extensa, amarelo acastanhada, irregular, ulcerada e friável, que drenava secreção purulenta acometendo o vestíbulo nasal e estendendo-se da porção caudal da concha dorsal, associada a obstrução do meato nasal, destruição do septo nasal e osso nasal palatino e vômer. Histologicamente, a lesão foi caracterizada como rinite e osteomielite piogranulomatosa e necrosante, multifocal a coalescente, aguda, crônica, associada a uma miríade de estruturas fúngicas. Morfologicamente, as hifas foram caracterizadas por paredes finas, discretamente tortuosas e septadas medindo 2 a 6 μm de diâmetro. Observamos algumas cadeias de conídios ou grupos com 8 a 10 μm de diâmetro e clamidoconídios pigmentados medindo de 7,5 a 15 μm de diâmetro. Foram positivos na histoquímica especial de Fontana Masson, Nitrato de Metenamina de Prata de Grocott e Ácido Periódico de Schiff. O agente foi determinado por meio de isolamento microbiológico associado à identificação molecular. A rinite piogranulomatosa causada por E. rostratum em caprinos é inédita, sendo o primeiro isolamento do agente em animais no Brasil e o primeiro caso de feo-hifomicose nasal na espécie caprina.

2.
Ciênc. rural (Online) ; 53(2): e20210807, 2023. ilus
Artigo em Inglês | VETINDEX | ID: biblio-1412051

Resumo

We described a case of rhinitis case caused by Exserohilum rostratum in a 3-year-old, mixed breed, afemale goat, presenting with decreased appetite, dyspnea, and face deformity, with evolution of approximately 2 months. Necropsy revealed an extensive brownish yellow, irregular, ulcerated, and friable focal lesion in the nasal cavity. Purulent secretion drained from the lesion, affecting the nasal vestibule and extending the caudal portion of the dorsal concha, associated with nasal meatus obstruction, destruction of the nasal septum, and nasal bone palatine and vomer. Histologically, the lesion was characterized as rhinitis and pyogranulomatous and necrotizing osteomyelitis (multifocal to coalescent, sharp, and chronic) and associated with a myriad of fungal structures. Morphologically, the hyphae were characterized by thin, slightly tortuous, and rarely septate walls (2-6 µm diameter), multiple chains of individual conidia or in groups (8-10 µm diameter), and pigmented chlamydoconidia (7.5-15 µm diameter). They showed positive results for the special histochemical techniques such as Fontana Masson, methenamine silver nitrate by Grocott, and periodic acid by Schiff. E. rostratum was identified as the causative agent using microbiological isolation associated with molecular identification. Pyrogranulomatous rhinitis caused by E. rostratum in goats is unprecedented, being the first isolation of the agent in animals in Brazil and the first case of nasal phaeohyphomycosis in the goats.


Descreve-se um caso de rinite por Exserohilum rostratum em um caprino, sem raça definida, fêmea, três anos, com diminuição do apetite, dispneia e deformidade facial, com evolução de aproximadamente dois meses. Durante a necropsia, observou-se que na cavidade nasal havia área focal extensa, amarelo acastanhada, irregular, ulcerada e friável, que drenava secreção purulenta acometendo o vestíbulo nasal e estendendo-se da porção caudal da concha dorsal, associada a obstrução do meato nasal, destruição do septo nasal e osso nasal palatino e vômer. Histologicamente, a lesão foi caracterizada como rinite e osteomielite piogranulomatosa e necrosante, multifocal a coalescente, aguda, crônica, associada a uma miríade de estruturas fúngicas. Morfologicamente, as hifas foram caracterizadas por paredes finas, discretamente tortuosas e septadas medindo 2 a 6 µm de diâmetro. Observamos algumas cadeias de conídios ou grupos com 8 a 10 µm de diâmetro e clamidoconídios pigmentados medindo de 7,5 a 15 µm de diâmetro. Foram positivos na histoquímica especial de Fontana Masson, Nitrato de Metenamina de Prata de Grocott e Ácido Periódico de Schiff. O agente foi determinado por meio de isolamento microbiológico associado à identificação molecular. A rinite piogranulomatosa causada por E. rostratum em caprinos é inédita, sendo o primeiro isolamento do agente em animais no Brasil e o primeiro caso de feo-hifomicose nasal na espécie caprina.


Assuntos
Animais , Ruminantes , Rinite/veterinária , Dispneia/veterinária , Cavidade Nasal/anormalidades
3.
Pesqui. vet. bras ; 40(8): 621-629, Aug. 2020. tab, ilus
Artigo em Inglês | LILACS, VETINDEX | ID: biblio-1135666

Resumo

This study aimed to quantify nasosinusal neoplasms diagnosed in dogs in 20 years (2000-2019) and characterize the main clinical, macroscopic, and histological aspects of these neoplasms. The sex, breed, age, skull conformation, the main clinical signs, and the anatomopathological characteristics (distribution, macroscopy, and histology) were computed. During this period, 49 dogs were affected by neoplasms in these regions, totaling 50 neoplasms (one dog had two neoplasms of different locations and histogenetic origins). Similar amounts of mixed-breed dogs (25/49) and purebred dogs (24/49) were affected, these distributed in 16 breeds. Among purebreds, it was noted that dogs with mesocephalic cranial conformation (12/24) were the most affected, followed by dolichocephalic (10/24) and brachycephalic (2/24). There were 22 cases in males and 27 in females, making a proportion of 1:1.23. There was an age variation from 11 months to 16 years old. The epithelial neoplasms have occurred in older dogs compared to those of other histogenic origins (mesenchymal and other origins/round cells). The main clinical signs were similar between the histogenetic categories, related to the involvement of the upper respiratory tract, sometimes accompanied by nervous signs (when there was brain invasion of nasal neoplasms or vice versa). The possible origin site was mostly in the nasal cavity concerning the paranasal sinuses (and other locations). Invasions occurred in different tissues adjacent to the nasal cavity and paranasal sinuses, resulting in cranial and facial deformities (21/49). The frequency was 48% of epithelial neoplasms, 32% of mesenchymal neoplasms, and 10% of neoplasms with other origins and round cells. The neoplasms most frequently observed, in decreasing order of frequency, were: adenocarcinoma (9/50), squamous cell carcinoma (9/50), transmissible venereal tumor (5/50), osteosarcoma (5/50), chondrosarcoma (4/50), and undifferentiated sarcoma (4/50). Through this study, it was possible to establish the frequency of these neoplasms in 20 years and their clinical, macroscopic, and histological characteristics.(AU)


Este estudo teve como objetivo quantificar os neoplasmas nasossinusais diagnosticados em cães em 20 anos (2000-2019) e caracterizar os principais aspectos clínicos, macroscópicos e histológicos desses neoplasmas. Foram computados sexo, raça, idade, conformação do crânio, principais sinais clínicos e características anatomopatológicas (distribuição, macroscopia e histologia). Nesse período, 49 cães foram acometidos por neoplasmas nessas regiões, totalizando 50 neoplasmas (um cão tinha dois neoplasmas de localização e origens histogenéticas distintas). Foram acometidas quantidades semelhantes de cães sem raça definida (25/49) e de cães com raça definida (24/49), estes distribuídos em 16 raças. Entre os cães com raça definida, notou-se que os cães com conformação craniana mesocefálica (12/24) foram os mais acometidos, seguidos pelos dolicocefálicos (10/24) e braquicefálicos (2/24). Foram observados 22 casos em machos e 27 em fêmeas, perfazendo a relação de 1:1,23. Ocorreu uma variação de idade de 11 meses a 16 anos; tendo os neoplasmas epiteliais ocorrido em cães mais velhos quando comparado aos de outras origens histogênicas (mesenquimais e outras origens/células redondas). Os principais sinais clínicos foram semelhantes entre as categorias histogenéticas, sendo relacionados ao comprometimento do trato respiratório superior, por vezes acompanhados de sinais nervosos (quando houve invasão encefálica de neoplasmas nasais ou vice-versa). O possível local de origem em sua maioria foi na cavidade nasal em relação aos seios nasais (e de outras localizações). Ocorreram invasões para diferentes tecidos adjacentes à cavidade nasal e seios paranasais, tendo como consequência deformidades cranianas e faciais (21/49). A frequência foi de 48% de neoplasmas epiteliais, 32% de neoplasmas mesenquimais e 10% de neoplasmas com outras origens e de células redondas. Os neoplasmas mais frequentemente observados, em ordem decrescente de frequência, foram: adenocarcinoma (9/50), carcinoma de células escamosas (9/50), tumor venéreo transmissível (5/50), osteossarcoma (5/50), condrossarcoma (4/50) e sarcoma indiferenciado (4/50). Com isso, pode-se estabelecer a frequência desses neoplasmas em 20 anos, bem como suas características clínicas, macroscópicas e histológicas.(AU)


Assuntos
Animais , Cães , Seios Paranasais/patologia , Neoplasias dos Seios Paranasais/veterinária , Neoplasias dos Seios Paranasais/epidemiologia , Neoplasias Nasais/patologia , Neoplasias Nasais/veterinária , Neoplasias Nasais/epidemiologia , Doenças do Cão/epidemiologia , Cavidade Nasal , Carcinoma/veterinária
4.
Pesqui. vet. bras ; 40(8): 621-629, Aug. 2020. tab, ilus
Artigo em Inglês | VETINDEX | ID: vti-32863

Resumo

This study aimed to quantify nasosinusal neoplasms diagnosed in dogs in 20 years (2000-2019) and characterize the main clinical, macroscopic, and histological aspects of these neoplasms. The sex, breed, age, skull conformation, the main clinical signs, and the anatomopathological characteristics (distribution, macroscopy, and histology) were computed. During this period, 49 dogs were affected by neoplasms in these regions, totaling 50 neoplasms (one dog had two neoplasms of different locations and histogenetic origins). Similar amounts of mixed-breed dogs (25/49) and purebred dogs (24/49) were affected, these distributed in 16 breeds. Among purebreds, it was noted that dogs with mesocephalic cranial conformation (12/24) were the most affected, followed by dolichocephalic (10/24) and brachycephalic (2/24). There were 22 cases in males and 27 in females, making a proportion of 1:1.23. There was an age variation from 11 months to 16 years old. The epithelial neoplasms have occurred in older dogs compared to those of other histogenic origins (mesenchymal and other origins/round cells). The main clinical signs were similar between the histogenetic categories, related to the involvement of the upper respiratory tract, sometimes accompanied by nervous signs (when there was brain invasion of nasal neoplasms or vice versa). The possible origin site was mostly in the nasal cavity concerning the paranasal sinuses (and other locations). Invasions occurred in different tissues adjacent to the nasal cavity and paranasal sinuses, resulting in cranial and facial deformities (21/49). The frequency was 48% of epithelial neoplasms, 32% of mesenchymal neoplasms, and 10% of neoplasms with other origins and round cells. The neoplasms most frequently observed, in decreasing order of frequency, were: adenocarcinoma (9/50), squamous cell carcinoma (9/50), transmissible venereal tumor (5/50), osteosarcoma (5/50), chondrosarcoma (4/50), and undifferentiated sarcoma (4/50). Through this study, it was possible to establish the frequency of these neoplasms in 20 years and their clinical, macroscopic, and histological characteristics.(AU)


Este estudo teve como objetivo quantificar os neoplasmas nasossinusais diagnosticados em cães em 20 anos (2000-2019) e caracterizar os principais aspectos clínicos, macroscópicos e histológicos desses neoplasmas. Foram computados sexo, raça, idade, conformação do crânio, principais sinais clínicos e características anatomopatológicas (distribuição, macroscopia e histologia). Nesse período, 49 cães foram acometidos por neoplasmas nessas regiões, totalizando 50 neoplasmas (um cão tinha dois neoplasmas de localização e origens histogenéticas distintas). Foram acometidas quantidades semelhantes de cães sem raça definida (25/49) e de cães com raça definida (24/49), estes distribuídos em 16 raças. Entre os cães com raça definida, notou-se que os cães com conformação craniana mesocefálica (12/24) foram os mais acometidos, seguidos pelos dolicocefálicos (10/24) e braquicefálicos (2/24). Foram observados 22 casos em machos e 27 em fêmeas, perfazendo a relação de 1:1,23. Ocorreu uma variação de idade de 11 meses a 16 anos; tendo os neoplasmas epiteliais ocorrido em cães mais velhos quando comparado aos de outras origens histogênicas (mesenquimais e outras origens/células redondas). Os principais sinais clínicos foram semelhantes entre as categorias histogenéticas, sendo relacionados ao comprometimento do trato respiratório superior, por vezes acompanhados de sinais nervosos (quando houve invasão encefálica de neoplasmas nasais ou vice-versa). O possível local de origem em sua maioria foi na cavidade nasal em relação aos seios nasais (e de outras localizações). Ocorreram invasões para diferentes tecidos adjacentes à cavidade nasal e seios paranasais, tendo como consequência deformidades cranianas e faciais (21/49). A frequência foi de 48% de neoplasmas epiteliais, 32% de neoplasmas mesenquimais e 10% de neoplasmas com outras origens e de células redondas. Os neoplasmas mais frequentemente observados, em ordem decrescente de frequência, foram: adenocarcinoma (9/50), carcinoma de células escamosas (9/50), tumor venéreo transmissível (5/50), osteossarcoma (5/50), condrossarcoma (4/50) e sarcoma indiferenciado (4/50). Com isso, pode-se estabelecer a frequência desses neoplasmas em 20 anos, bem como suas características clínicas, macroscópicas e histológicas.(AU)


Assuntos
Animais , Cães , Seios Paranasais/patologia , Neoplasias dos Seios Paranasais/veterinária , Neoplasias dos Seios Paranasais/epidemiologia , Neoplasias Nasais/patologia , Neoplasias Nasais/veterinária , Neoplasias Nasais/epidemiologia , Doenças do Cão/epidemiologia , Cavidade Nasal , Carcinoma/veterinária
5.
Acta sci. vet. (Impr.) ; 47(suppl.1): Pub.364-2019. ilus
Artigo em Inglês | VETINDEX | ID: biblio-1458130

Resumo

Background: Osteosarcomas are common malignant bone tumors described in dogs, humans and cats. However, thereare rare reports in horses. The tumor etiology has not been fully elucidated. Clinical signs are associated to the tumorsize, location and growth characteristics. When located on the face, the most common findings are facial distortion, nasaldischarge and inspiratory dyspnea. The aim of this study was to report an osteoblastic osteosarcoma in a horse, located onthe right maxillary region with projections into the corresponding nostril.Case: A 6-year-old mixbreed saddle gelding, presenting bay coat was admitted to a University Hospital with a chronicsinusitis history. The animal was previously examined and treated by other veterinarians, who suspected of odontogenicmaxillary sinusitis, and therefore a repulsion of the fourth premolar from the right maxilla hemiarcade was performed.However, an improvement of the clinical signs was not observed and subsequently the gelding was referred to a VeterinaryHospital. During physical examination the patient presented dyspnea, tachypnea and tachycardia. An increase on the facesize was observed, together with a fetid and purulent nasal discharge. During oral cavity inspection, a diagonal wear wasdetected at the occlusal surface of the right hemiarcade; food accumulation was seen at the dental extraction site, and acommunication with the rostral maxillary sinus was evidenced, from where a purulent fetid discharge was draining. At theradiographic exam, well defined margins of a tumor were observed, with adjacent bone lysis and the presence of a centralnucleus showing a gross granular mineral radiopacity, distorting the frontal and nasal bones. During the endoscopic exam,a mass partially occluding the right nasal cavity close to the nasal opening was seen, which was blocking the progressionof the endoscopy. However, during the left cavity inspection, at the end of the nasal septum a mass...


Assuntos
Animais , Cavalos , Cavidade Nasal/patologia , Osteossarcoma/veterinária , Sinusite/veterinária , Neoplasias Nasais/veterinária
6.
Acta sci. vet. (Online) ; 47(suppl.1): Pub. 364, 2019. ilus
Artigo em Inglês | VETINDEX | ID: vti-18397

Resumo

Background: Osteosarcomas are common malignant bone tumors described in dogs, humans and cats. However, thereare rare reports in horses. The tumor etiology has not been fully elucidated. Clinical signs are associated to the tumorsize, location and growth characteristics. When located on the face, the most common findings are facial distortion, nasaldischarge and inspiratory dyspnea. The aim of this study was to report an osteoblastic osteosarcoma in a horse, located onthe right maxillary region with projections into the corresponding nostril.Case: A 6-year-old mixbreed saddle gelding, presenting bay coat was admitted to a University Hospital with a chronicsinusitis history. The animal was previously examined and treated by other veterinarians, who suspected of odontogenicmaxillary sinusitis, and therefore a repulsion of the fourth premolar from the right maxilla hemiarcade was performed.However, an improvement of the clinical signs was not observed and subsequently the gelding was referred to a VeterinaryHospital. During physical examination the patient presented dyspnea, tachypnea and tachycardia. An increase on the facesize was observed, together with a fetid and purulent nasal discharge. During oral cavity inspection, a diagonal wear wasdetected at the occlusal surface of the right hemiarcade; food accumulation was seen at the dental extraction site, and acommunication with the rostral maxillary sinus was evidenced, from where a purulent fetid discharge was draining. At theradiographic exam, well defined margins of a tumor were observed, with adjacent bone lysis and the presence of a centralnucleus showing a gross granular mineral radiopacity, distorting the frontal and nasal bones. During the endoscopic exam,a mass partially occluding the right nasal cavity close to the nasal opening was seen, which was blocking the progressionof the endoscopy. However, during the left cavity inspection, at the end of the nasal septum a mass...(AU)


Assuntos
Animais , Cavalos , Osteossarcoma/veterinária , Cavidade Nasal/patologia , Sinusite/veterinária , Neoplasias Nasais/veterinária
7.
Vet. Zoot. ; 26: 1-7, 25 fev. 2019. ilus, tab
Artigo em Português | VETINDEX | ID: vti-20018

Resumo

A doença nasal crônica é uma enfermidade rotineira na clínica de pequenos animais que possui causas variadas, sendo necessária a realização de exames complementares para o diagnóstico definitivo, principalmente os de imagem. O objetivo desse estudo retrospectivo foi avaliar tomografias computadorizadas da cavidade nasal de cães e descrever as principais alterações neoplásicas encontradas. Dentre os achados, foi observado em 100% dos animais a opacificação da cavidade nasal, seguida da captação de contraste na lesão em 92,3%, osteólise em 84,6%, e em menor frequência (53,8%) a perda de definição ou desvio do septo nasal. Nesses animais o diagnóstico de neoplasia nasal foi sugerido pelo exame tomográfico e confirmado pelos exames citológico e histológico.(AU)


Chronic nasal disease is a frequent disease at small animal clinics that has innumerous causes, requiring complementary exams to obtain a definitive diagnosis, especially imaging. The objective this retrospective study was to evaluate computed tomographic scans of dogs nasal cavities and describe the main changes observed in nasal tumors. Among the tomographic findings, opacification of the nasal cavity was observed in 100% of the animals, followed by lesion contrast uptake in 92.3%, osteolysis in 84.6%, and less frequently (53.8%) loss of definition or deviation of the nasal septum. In those animals, the diagnosis of nasal tumors was suggested by tomographic exams and confirmed by cytological and histological exams.(AU)


La enfermedad nasal crónica es una enfermedad frecuente en la clínica de pequeños animales que tiene causas variadas, siendo necesaria la realización de exámenes complementarios parael diagnóstico definitivo, especialmente los de imagen. El objetivo de este estudio restrospectivo fue evaluar tomografías computadorizadas de la cavidad nasal de perros y describir las principales alteraciones neoplasicas observadas. Entre los hallazgos, se observó en el 100% de los animales la opacificación de la cavidad nasal, seguida de la captación de contraste en la lesión en 92,3%, osteolisis en el 84,6%, y en menor frecuencia (53,8%) la pérdida de definición o desviación septal. En estos animales el diagnóstico de neoplasia nasal fue sugerido por el examen tomográfico y confirmados por los exámenes citológico e histológico.(AU)


Assuntos
Animais , Cães , Neoplasias Nasais/diagnóstico por imagem , Neoplasias Nasais/patologia , Neoplasias Nasais/veterinária , Cavidade Nasal/patologia , Cavidade Nasal/diagnóstico por imagem , Tomografia/veterinária
8.
Vet. zootec ; 26: 1-7, 25 fev. 2019. ilus, tab
Artigo em Português | VETINDEX | ID: biblio-1503538

Resumo

A doença nasal crônica é uma enfermidade rotineira na clínica de pequenos animais que possui causas variadas, sendo necessária a realização de exames complementares para o diagnóstico definitivo, principalmente os de imagem. O objetivo desse estudo retrospectivo foi avaliar tomografias computadorizadas da cavidade nasal de cães e descrever as principais alterações neoplásicas encontradas. Dentre os achados, foi observado em 100% dos animais a opacificação da cavidade nasal, seguida da captação de contraste na lesão em 92,3%, osteólise em 84,6%, e em menor frequência (53,8%) a perda de definição ou desvio do septo nasal. Nesses animais o diagnóstico de neoplasia nasal foi sugerido pelo exame tomográfico e confirmado pelos exames citológico e histológico.


Chronic nasal disease is a frequent disease at small animal clinics that has innumerous causes, requiring complementary exams to obtain a definitive diagnosis, especially imaging. The objective this retrospective study was to evaluate computed tomographic scans of dog’s nasal cavities and describe the main changes observed in nasal tumors. Among the tomographic findings, opacification of the nasal cavity was observed in 100% of the animals, followed by lesion contrast uptake in 92.3%, osteolysis in 84.6%, and less frequently (53.8%) loss of definition or deviation of the nasal septum. In those animals, the diagnosis of nasal tumors was suggested by tomographic exams and confirmed by cytological and histological exams.


La enfermedad nasal crónica es una enfermedad frecuente en la clínica de pequeños animales que tiene causas variadas, siendo necesaria la realización de exámenes complementarios parael diagnóstico definitivo, especialmente los de imagen. El objetivo de este estudio restrospectivo fue evaluar tomografías computadorizadas de la cavidad nasal de perros y describir las principales alteraciones neoplasicas observadas. Entre los hallazgos, se observó en el 100% de los animales la opacificación de la cavidad nasal, seguida de la captación de contraste en la lesión en 92,3%, osteolisis en el 84,6%, y en menor frecuencia (53,8%) la pérdida de definición o desviación septal. En estos animales el diagnóstico de neoplasia nasal fue sugerido por el examen tomográfico y confirmados por los exámenes citológico e histológico.


Assuntos
Animais , Cães , Cavidade Nasal/diagnóstico por imagem , Cavidade Nasal/patologia , Neoplasias Nasais/diagnóstico por imagem , Neoplasias Nasais/patologia , Neoplasias Nasais/veterinária , Tomografia/veterinária
9.
Braz. j. vet. pathol ; 11(1): 7-11, Mar.2018. ilus
Artigo em Inglês | VETINDEX | ID: biblio-1469697

Resumo

This is a case report of leishmaniasis with granulomatous rhinitis in a 2-year-old domestic cat. Clinically, an obstruction in the right nostril was observed, with cytopathological examination positive for Leishmania sp. Euthanasia was performed, and multinodular, diffuse and smooth pinkish lesions were observed in the mucosa of the nasal cavity. Microscopically, nodular lesions corresponded to an intense granulomatous inflammation with macrophages containing large numbers of Leishmania sp. amastigotes. Macrophages containing amastigotes were also occasionally observed in the popliteal lymph node, skin, and spleen. Based on immunohistochemistry, amastigotes were confirmed as Leishmania sp. and Leishmania sp. DNA was also detected by qPCR in lymph nodes samples. Although it is an uncommon manifestation, leishmaniasis should be considered as a differential diagnosis in diseases affecting the nasal cavity in domestic felines.


Assuntos
Animais , Gatos , Cavidade Nasal , Granuloma/veterinária , Imuno-Histoquímica , Leishmaniose/veterinária , Rinite/veterinária , Diagnóstico Diferencial
10.
Braz. J. Vet. Pathol. ; 11(1): 7-11, Mar.2018. ilus
Artigo em Inglês | VETINDEX | ID: vti-734790

Resumo

This is a case report of leishmaniasis with granulomatous rhinitis in a 2-year-old domestic cat. Clinically, an obstruction in the right nostril was observed, with cytopathological examination positive for Leishmania sp. Euthanasia was performed, and multinodular, diffuse and smooth pinkish lesions were observed in the mucosa of the nasal cavity. Microscopically, nodular lesions corresponded to an intense granulomatous inflammation with macrophages containing large numbers of Leishmania sp. amastigotes. Macrophages containing amastigotes were also occasionally observed in the popliteal lymph node, skin, and spleen. Based on immunohistochemistry, amastigotes were confirmed as Leishmania sp. and Leishmania sp. DNA was also detected by qPCR in lymph nodes samples. Although it is an uncommon manifestation, leishmaniasis should be considered as a differential diagnosis in diseases affecting the nasal cavity in domestic felines.(AU)


Assuntos
Animais , Gatos , Leishmaniose/veterinária , Rinite/veterinária , Granuloma/veterinária , Imuno-Histoquímica , Cavidade Nasal , Diagnóstico Diferencial
11.
Pesqui. vet. bras ; 36(10): 925-929, out. 2016. graf, ilus, mapas
Artigo em Português | LILACS, VETINDEX | ID: biblio-842000

Resumo

No período de janeiro de 2011 a dezembro de 2014 foram diagnosticados 9 surtos (A, B, C, D, E, F, G, H e I) de Oestrus ovis em pequenos ruminantes no estado da Bahia. No surto A obteve-se 0,5% (1/200); B 2,2% (2/90); C 0,8% (1/120); D 2% (2/100); E 1% (1/100); F 3% (1/33); G 0,6% (1/150); H 2,5% (5/200); I com 11,4% (8/70) em ovinos e 5% (2/40) em caprinos. Os sinais clínicos associados ao parasitismo pelas larvas nos surtos foram respiração ruidosa, espirro seguido de secreção nasal catarral, inquietação, movimentação excessiva da cabeça e andar em círculo. Macroscopicamente havia nos seios e conchas nasais hiperemia, edema da mucosa e presença de larvas. Todas as larvas coletadas dos cornetos e conchas nasais variavam desde o primeiro ao terceiro estágio de desenvolvimento. Algumas larvas L3 coletadas nas necropsias foram incubadas e o imago obtido das pupas mediram aproximadamente 10mm de cor acinzentada e abdômen escurecido. Realizada análise descritiva das condições climáticas, ano e positividade de casos de oestrose, demonstrou que a ocorrência tem tendência de crescimento com os anos (p˂0,001) e que houve casos com menor média de temperatura mínima (p˂0,001), possibilitando o desenvolvimento da mosca de O. ovis, demonstrando que houve a introdução da mosca enTtre o rebanho de ovinos e caprinos do estado da Bahia, e que as condições climáticas são ideais para perpetuação da espécie.(AU)


From January 2011 to December 2014 were diagnosed 9 outbreaks of Oestrus ovis infection in small ruminants (Outbreaks A-I) in the State of Bahia. The incidence of oestrosis in sheep in outbreak A was 0.5% (1/200), in B 2.2% (2/90), in C 0.8% (1/120), in D 2% (2/100), in E 1% (1/100), in F 3% (1/33), in G 0.6% (1/150), in H 2.5% (5/200), and in I 11.42% (8/70), and 5% (2/40) in goats. Clinical signs associated with parasitism were wheezing, sneezing followed by catarrhal nasal secretion, some restlessness, excessive head movement and walking in circles. The breasts and turbinates were hyperemic, with mucosal edema and presence of O. ovis larvae. All larvae collected from the turbinates ranged from the first to the third stage of development. Some L3 larvae collected at necropsy were incubated and the gray colored Imago with dark abdomen obtained from the pupae measured about 10mm. A descriptive analysis of the climatic conditions was carried out; in the year of investigation the incidence of O. ovis infection has grown (p<0.001), and the lowest mean minimum temperature (p<0.001) caused the development the O. ovis fly, so that there was an introduction of an increased number of these flies into the sheep and goat flocks in state of Bahia with the ideal climatic conditions for their perpetuation.(AU)


Assuntos
Animais , Larva/parasitologia , Miíase/veterinária , Obstrução Nasal/patologia , Obstrução Nasal/veterinária , Ovinos , Cavidade Nasal/patologia , Ruminantes
12.
Pesqui. vet. bras ; 36(10): 925-929, 2016. ilus, mapas, graf
Artigo em Português | VETINDEX | ID: vti-11470

Resumo

From January 2011 to December 2014 were diagnosed 9 outbreaks of Oestrus ovis infection in small ruminants (Outbreaks A-I) in the State of Bahia. The incidence of oestrosis in sheep in outbreak A was 0.5% (1/200), in B 2.2% (2/90), in C 0.8% (1/120), in D 2% (2/100), in E 1% (1/100), in F 3% (1/33), in G 0.6% (1/150), in H 2.5% (5/200), and in I 11.42% (8/70), and 5% (2/40) in goats. Clinical signs associated with parasitism were wheezing, sneezing followed by catarrhal nasal secretion, some restlessness, excessive head movement and walking in circles. The breasts and turbinates were hyperemic, with mucosal edema and presence of O. ovis larvae. All larvae collected from the turbinates ranged from the first to the third stage of development. Some L3 larvae collected at necropsy were incubated and the gray colored Imago with dark abdomen obtained from the pupae measured about 10mm. A descriptive analysis of the climatic conditions was carried out; in the year of investigation the incidence of O. ovis infection has grown (p 0.001), and the lowest mean minimum temperature (p 0.001) caused the development the O. ovis fly, so that there was an introduction of an increased number of these flies into the sheep and goat flocks in state of Bahia with the ideal climatic conditions for their perpetuation.(AU)


No período de janeiro de 2011 a dezembro de 2014 foram diagnosticados 9 surtos (A, B, C, D, E, F, G, H e I) de Oestrus ovis em pequenos ruminantes no estado da Bahia. No surto A obteve-se 0,5% (1/200); B 2,2% (2/90); C 0,8% (1/120); D 2% (2/100); E 1% (1/100); F 3% (1/33); G 0,6% (1/150); H 2,5% (5/200); I com 11,4% (8/70) em ovinos e 5% (2/40) em caprinos. Os sinais clínicos associados ao parasitismo pelas larvas nos surtos foram respiração ruidosa, espirro seguido de secreção nasal catarral, inquietação, movimentação excessiva da cabeça e andar em círculo. Macroscopicamente havia nos seios e conchas nasais hiperemia, edema da mucosa e presença de larvas. Todas as larvas coletadas dos cornetos e conchas nasais variavam desde o primeiro ao terceiro estágio de desenvolvimento. Algumas larvas L3 coletadas nas necropsias foram incubadas e o imago obtido das pupas mediram aproximadamente 10mm de cor acinzentada e abdômen escurecido. Realizada análise descritiva das condições climáticas, ano e positividade de casos de oestrose, demonstrou que a ocorrência tem tendência de crescimento com os anos (p0,001) e que houve casos com menor média de temperatura mínima (p0,001), possibilitando o desenvolvimento da mosca de O. ovis, demonstrando que houve a introdução da mosca enTtre o rebanho de ovinos e caprinos do estado da Bahia, e que as condições climáticas são ideais para perpetuação da espécie.(AU)


Assuntos
Animais , Obstrução Nasal/patologia , Obstrução Nasal/veterinária , Larva/parasitologia , Miíase/veterinária , Ovinos , Cavidade Nasal/patologia , Ruminantes
13.
Tese em Português | VETTESES | ID: vtt-220895

Resumo

A ocorrência de neoplasmas nasossinusais em cães é considerada muito baixa, por isso estudos relacionados a esses neoplasmas são escassos. Eles podem ser neoplasmas benignos ou malignos, entretanto a maior parte deles é classificada como maligna. Devido às características anatômicas e histológicas da cavidade nasal e dos seios nasais, podem surgir neoplasmas de diversas origens histológicas, devido a sua diversidade de epitélios que revestem essas cavidades e pela presença de estruturas ósseas e cartilaginosas adjacentes. Este estudo teve como objetivo realizar um levantamento retrospectivo de 2000 a 2019, contabilizando todos os casos de neoplasmas nasossinusais em cães nesse período, dentre todos os casos de biópsias e necropsias nessa espécie. Foram também computados o sexo, raça, idade, conformação do crânio, os principais sinais clínicos e as características anatomopatológicas (distribuição, macroscopia e histologia). Nesse período, 49 cães foram acometidos por neoplasmas nessas regiões, totalizando 50 neoplasmas (um cão tinha dois neoplasmas de localização e origens histogenéticas distintas). Foram acometidas quantidades semelhantes de cães sem raça definida (25/49) e cães com raça definida (24/49), estes distribuídos em 16 raças. Entre os cães com raça definida, notou-se que os cães com conformação craniana mesocefálica (12/24) foram os mais acometidos, seguidos pelos dolicocefálicos (10/24) e braquicefálicos (2/24). Foram observados 22 casos em machos e 27 em fêmeas, perfazendo a relação de 1:1,23. Ocorreu uma variação de idade de 11 meses a 16 anos; tendo os neoplasmas epiteliais ocorrido em cães mais velhos quando comparado aos de outras origens histogênicas (mesenquimais e outras origens/células redondas). Os principais sinais clínicos foram semelhantes entre as categorias histogenéticas, sendo relacionados ao comprometimento do trato respiratório superior, por vezes acompanhados de sinais nervosos (quando houve invasão encefálica de neoplasmas nasais ou vice-versa). O possível local de origem em sua maioria foi na cavidade nasal em relação aos seios nasais (e de outras localizações). Ocorreram invasões para diferentes tecidos adjacentes à cavidade nasal e seios paranasais, tendo como consequência deformidades cranianas e faciais (21/49). A frequência foi de 48% de neoplasmas epiteliais, 32% de neoplasmas mesenquimais e 10% de neoplasmas com outras origens e de células redondas. Os neoplasmas mais frequentemente observados, em ordem decrescente de frequência, foram: adenocarcinoma (9/50), carcinoma de células escamosas (9/50), tumor venéreo transmissível (5/50), osteossarcoma (5/50), condrossarcoma (4/50) e sarcoma indiferenciado (4/50). Com isso, pode-se estabelecer a frequência desses neoplasmas em 20 anos, bem como suas características clínicas, macroscópicas e histológicas.


The occurrence of nasosinusal neoplasms in dogs is considered to be very low, therefore studies related to these neoplasms are scarce. They can be either benign or malignant neoplasms, however most of them are classified as malignant. Due to the anatomical and histological characteristics of the nasal cavity and sinuses, neoplasms of different histological origins may arise, due to their diversity of epithelia that line these cavities and the presence of adjacent bone and cartilaginous structures. This study aimed to carry out a retrospective survey from 2000 to 2019, counting for all cases of nasosinusal neoplasms in dogs in that period, among all cases of biopsies and necropsies in this species. The sex, breed, age, skull conformation, the main clinical signs and the anatomopathological characteristics (distribution, macroscopy and histology) were also computed. During this period, 49 dogs were affected by neoplasms in these regions, totaling 50 neoplasms (one dog had two neoplasms of different location and histogenetic origins). Similar amounts of mixed breed dogs (25/49) and defined breed dogs (24/49) were affected, these distributed in 16 breeds. Among dogs with defined breed, it was noted that dogs with mesocephalic cranial conformation (12/24) were the most affected, followed by dolichocephalic (10/24) and brachycephalic (2/24). There were 22 cases in males and 27 in females, making a proportion of 1:1.23. There was an age variation from 11 months to 16 years; the epithelial neoplasms having occurred in older dogs when compared to those of other histogenic origins (mesenchymal and other origins/round cells). The main clinical signs were similar between the histogenetic categories, being related to the involvement of the upper respiratory tract, sometimes accompanied by nervous signs (when there was brain invasion of nasal neoplasms or vice versa). The possible origin site was mostly in the nasal cavity in relation to the paranasal sinuses (and other locations). Invasions occurred in different tissues adjacent to the nasal cavity and paranasal sinuses, resulting in cranial and facial deformities (21/49). The frequency was 48% of epithelial neoplasms, 32% of mesenchymal neoplasms and 10% of neoplasms with other origins and round cells. The neoplasms most frequently observed, in decreasing order of frequency, were: adenocarcinoma (9/50), squamous cell carcinoma (9/50), transmissible venereal tumor (5/50), osteosarcoma (5/50), chondrosarcoma (4/50) and undifferentiated sarcoma (4/50). Through this study it was possible to establish the frequency of these neoplasms in 20 years, as well as their clinical, macroscopic and histological characteristics.

14.
Pesqui. vet. bras ; 35(7): 627-636, jul. 2015. tab, graf, ilus
Artigo em Português | VETINDEX | ID: vti-846

Resumo

As enfermidades que acometem a cavidade nasal de pequenos ruminantes podem causar prejuízos aos rebanhos de ovinos e caprinos na região central do Brasil. Foi realizado estudo retrospectivo dos laudos de necropsia do Laboratório de Patologia Veterinária da Universidade de Brasília (LPV-UnB) nos anos de 2003 a 2014 para verificar a ocorrência das doenças que acometeram a cavidade nasal de pequenos ruminantes. Foram analisados 463 protocolos de ovinos e 75 de caprinos totalizando 538 casos. Seis ovinos (6/463 1,29%) foram necropsiados com rinite granulomatosa micótica ou oomicótica e 22 animais do estudo (22/538; 4,08%) tiveram o diagnóstico de oestrose, sendo 86,36% ovinos e 13,64% caprinos. As rinites piogranulomatosas em ovinos ocorreram em áreas alagadas, com abundante material vegetal em decomposição. Os ovinos com pitiose rinofacial apresentaram como principais alterações aumento de volume na região nasal devido a extensas lesões granulomatosas associadas a necrose tecidual, caracterizadas por inúmeros macrófagos e polimorfonucleares circundando centros necróticos contendo o agente envolto por reação de Splendore-Hoeppli. Os ovinos com conidiobolomicose exibiram extensas áreas de necrose e inflamação piogranulomatosa, associadas à presença de hifas fúngicas na nasofaringe e também na região peribulbar e exoftalmia. A maioria dos animais com oestrose não apresentou alterações clínico-patológicas significativas, apesar de serem encontradas larvas principalmente nos seios e conchas nasais, traqueia e seio paranasal. A importância dessas enfermidades ainda é pouco conhecida na região, sendo de grande relevância que as condições clínico-patológicas e epidemiológicas sejam elucidadas para o diagnóstico, o controle e a prevenção, para evitar a expansão e prejuízos para os rebanhos.(AU)


Nasal cavity diseases that affect small ruminants can cause losses to sheep and goat herds in Central Brazil. A retrospective study of the University of Brasilia´s Veterinary Pathology Laboratory autopsy reports from 2003 to 2014 was conducted to verify the occurrence of small ruminants nasal cavity diseases. Six necropsied sheep (6/463 1.29%) showed mycotic or oomicotic granulomatous rhinitis and 22 animals (22/538, 4.08%) presented oestrosis diagnosis, affecting 86.36% of sheep and 13.64% of goats. The pyogranulomatous rhinitis in sheep occurred in flooded areas with abundant plant material decomposing. Rhinofacial pythiosis infection in animals showed as major changes swelling in the nasal region due to extensive granulomatous lesions associated with tissue necrosis, characterized by numerous macrophages and polymorphonuclear cells surrounding necrotic centers containing the agent surrounded by Splendore-Hoeppli reaction. Sheep with conidiobolomycosis showed extensive areas of necrosis and pyogranulomatous inflammation associated with fungal hyphae, localized in the nasopharynx and also in peribulbar region and exophthalmia. Most animals with oestrosis showed no significant clinical and pathological changes, even with the presence of larvae mainly in the sinuses and nasal turbinates, trachea and paranasal sinus. The importance of such diseases is still unknown in the region, and the knowledge of the clinical-pathological and epidemiological conditions is of great relevance for the diagnosis, control and prevention to avoid the expansion and losses to livestock.(AU)


Assuntos
Animais , Ovinos , Rinite/fisiopatologia , Rinite/veterinária , Cavidade Nasal/patologia , Conidiobolus/patogenicidade , Pythium/patogenicidade , Imuno-Histoquímica/veterinária , Reação em Cadeia da Polimerase/veterinária
15.
Braz. j. vet. pathol ; 5(2): 86-88, jul. 2012. ilus
Artigo em Inglês | VETINDEX | ID: biblio-1397788

Resumo

A 16-year-old Quarter Horse was admitted to the Veterinary Hospital after recurrent epistaxis episodes. Dyspnea and intolerance to exercise were noticed. An irregular multinodular mass was observed in the mucosa of the rostral nasal cavity, causing partial stenosis of the anterior airways. To improve the respiratory condition of the animal, most of the mass was surgically removed. Histologic examination revealed eosinophilic hyaline material in the lamina propria, walls of submucosal lymphatic and blood vessels, and basement membrane of mucosal glands of the nasal cavity. This material stained orange-red with Congo-red, with the characteristic green birefringence under polarizing light, confirming the amyloid diagnosis. Giant cells and mononuclear cell infiltrate were also observed. One year after the partial removal of the lesion, the horse had only mild respiratory signs.(AU)


Assuntos
Animais , Paraproteinemias/veterinária , Doenças da Medula Óssea/diagnóstico , Cadeias Leves de Imunoglobulina , Cavalos , Amiloidose/veterinária , Brasil
16.
Acta sci. vet. (Impr.) ; 40(2): Pub. 1042, 2012. ilus
Artigo em Português | VETINDEX | ID: biblio-1373567

Resumo

Background: Chondrosarcoma is a malignant neoplasm originated from chondroid cells with production of cartilage matrix with lot of degrees of differentiation. It may be found in skeletal or extraskeletal tissue, more commonly in flat bones. It most often has an aggressive behavior with involvement of bone and adjacent soft tissues, which necessitates their rapid identification, surgical intervention and therapy. Chondrosarcoma is reported as uncommon neoplasm in the nasal cavity of dogs and should be distinguished by both other malignancies and for non-neoplastic diseases. Case: A 7-years-old dog, mixed breed, male, had a swelling in the nasal cavity for more than 30 days. The change was seen in the right frontal-nasal region with invasion of the oral cavity, with serous nasal discharge and also, inspiratory and expiratory noises. Even after cytology and biopsy of the tumor to chemotherapy instituted, there was not successful and the dog was euthanized. At necropsy, there was a large multilobulated mass, with firm consistency, interspersed with soft areas in the right nasal region. In the cut surface, the mass showed staining grayish-white interspersed with dark areas, which block most of the nasal cavity causing partial lysis of frontal, temporal and tubinates bones, as well as purulent secretion of the frontal sinuses (sinusitis). Microscopically, the mass consisted of mesenchymal neoplastic cells arranged in bundles or nodules without orientation, separated by fine bands of fibrous connective tissue poorly vascularized. The neoplastic cells showed round to oval nucleus, sparse chromatin and conspicuous nucleoli. Some areas were more solid and composed of cells with few cytoplasm, similar to chondroblastic cells. It was observed multifocal areas of chondroid matrix formation. Discussion: Based on pathological findings, the diagnosis of chondrosarcoma was confirmed. The histopathological findings confirmed the diagnosis of chondrosarcoma suggested by cytology. Despite being an uncommon neoplasm in dogs, chondrosarcoma should be considered as differential diagnosis of other nasal diseases that can lead macroscopic changes and similar clinical signs. The osteosarcoma is the most common bone tumor of the nasal cavity in dogs. The similarity of the macroscopic findings of chondrosarcoma and oesteosarcoma, as well as histological and immunohistochemical stain, may be a challenge to diagnosis for the clinician and pathologist. Other neoplasms such as squamous cell carcinoma, fibrosarcoma and hemangiosarcoma, as well as proliferative rhinitis caused by fungal agents, should also be considered in the differential diagnosis. These conditions can be differentiated by microscopic features and immunohistochemical stain. The fine needle aspiration biopsy is an important method, however to establish the definitive diagnosis is always required histopathologic evaluation. In primary chondrosarcoma of the nasal cavity in dogs, the survival with treatment is made from three to six months, however, often results in local severe invasion and serious clinical changes. In this case, the treatment was not effective because the degree of tumor differentiation and infiltration of the surrounding structures, as well as worsens of the clinical signs. The knowledge of the clinicopathological findings and biology of this tumor is essential for rapid diagnosis and more effective clinical interventions.


Assuntos
Animais , Masculino , Cães , Neoplasias Nasais/veterinária , Condrossarcoma/diagnóstico , Doenças do Cão/diagnóstico , Cavidade Nasal
17.
Acta sci. vet. (Impr.) ; 40(3): Pub. 1062, 2012. ilus
Artigo em Português | VETINDEX | ID: biblio-1373719

Resumo

Background: Wry Nose (Campylorrhinus lateralis) is a congenital shortening and deviation of the maxillae, premaxillae, nasal bones, vomer, and nasal septum that affects mainly foals. Intrauterine positioning as an etiology of this deformity is highly unlikely. Clinically, varying degree of premaxillar deviation is noticeable upon inspection of the foal's head. The deviation usually results in malocclusion, with no contact between the incisors of the mandible and maxilla. Some foals experience breathing difficulties or have increased respiratory sounds. This condition will not self-correct, and a decision should be made to treat the foal using reconstructive techniques or to euthanize it to prevent it from suffering. The objective of this work was to describe a case of wry nose in an adult male equine. Case: A 4-year-old, 300 kg, male SRD equine was submitted for necropsy. There was no history of respiratory problems and trouble with mastication or prehension of food. Three days before death the horse showed clinical sings characterized by no ingestion of food and water, changing behavior and locomotion, weakness, and not respond to calls, seemingly oblivious to the environment evolving into permanent recumbency and death after about 24 h of the decline. The horse was treated by a veterinarian who suspected of leucoencephalomalacea. The animal died 24 h after her condition worsened. Macroscopically, the main lesion observed was in the nose. The nasal septum was deviated to the left with the sigmoid appearance and a dorsal hump on the right side of the nasal bone. The radiographs of dorsoventral view of the jaws showing premaxillae deviated approximately 90 degrees to the left. The left premaxillae was shorter than the right premaxilla, thus creating a lesser and greater curvature of the premaxilla. Macroscopic and Microscopic lesions in the brain were not observed discarding the possibility of leucoencephalomalacea and other neurological diseases of infectious origin. Discussion: Wry nose is a relatively rare disease and have being reported in foals. In our study, it was not possible to determine the cause of this abnormality, but a computed tomography study has been associated this deformity with an underdeveloped pregnant uterus during the second half of pregnancy witch the narrow tip of the uterine horns provides only limited space for the developing cranial half of the fetus. Although the disease have been reported in young animals in which the surgical procedure in moderate to severe cases it is recommended, in the present case, the equine was four years old indicating that there is a possibility of the animal to reach adulthood, but with their commitment to quality of life. Several diseases, such as cystic degeneration, malformation of normal tissue, abscesses, fractures and neoplasms may cause thickening, malformation or deviation of the nasal septum in horse producing similar clinical sings. In the present case, the macroscopic lesions and radiography exam were useful to determinate the exact site, extent and nature of the involvement of the lesion. Despite the owner to report a clinical picture indicative of neurological disease, histological analysis of the brain ruled out this possibility. These findings indicate that wry nose disease should be kept in mind when investigating causes of deviation of the nasal septum in equines.


Assuntos
Animais , Masculino , Doenças dos Cavalos/diagnóstico , Cavalos/anormalidades , Septo Nasal/anormalidades
18.
Acta sci. vet. (Impr.) ; 40(2): 01-05, 2012.
Artigo em Português | LILACS-Express | VETINDEX | ID: biblio-1456987

Resumo

Background: Chondrosarcoma is a malignant neoplasm originated from chondroid cells with production of cartilage matrix with lot of degrees of differentiation. It may be found in skeletal or extraskeletal tissue, more commonly in flat bones. It most often has an aggressive behavior with involvement of bone and adjacent soft tissues, which necessitates their rapid identification, surgical intervention and therapy. Chondrosarcoma is reported as uncommon neoplasm in the nasal cavity of dogs and should be distinguished by both other malignancies and for non-neoplastic diseases.Case: A 7-years-old dog, mixed breed, male, had a swelling in the nasal cavity for more than 30 days. The change was seen in the right frontal-nasal region with invasion of the oral cavity, with serous nasal discharge and also, inspiratory and expiratory noises. Even after cytology and biopsy of the tumor to chemotherapy instituted, there was not successful and the dog was euthanized. At necropsy, there was a large multilobulated mass, with firm consistency, interspersed with soft areas in the right nasal region. In the cut surface, the mass showed staining grayish-white interspersed with dark areas, which block most of the nasal cavity causing partial lysis of frontal, temporal and tubinates bones, as well as purulent secretion of the frontal sinuses (sinusitis). Microscopically, the mass consisted of mesench


Background: Chondrosarcoma is a malignant neoplasm originated from chondroid cells with production of cartilage matrix with lot of degrees of differentiation. It may be found in skeletal or extraskeletal tissue, more commonly in flat bones. It most often has an aggressive behavior with involvement of bone and adjacent soft tissues, which necessitates their rapid identification, surgical intervention and therapy. Chondrosarcoma is reported as uncommon neoplasm in the nasal cavity of dogs and should be distinguished by both other malignancies and for non-neoplastic diseases.Case: A 7-years-old dog, mixed breed, male, had a swelling in the nasal cavity for more than 30 days. The change was seen in the right frontal-nasal region with invasion of the oral cavity, with serous nasal discharge and also, inspiratory and expiratory noises. Even after cytology and biopsy of the tumor to chemotherapy instituted, there was not successful and the dog was euthanized. At necropsy, there was a large multilobulated mass, with firm consistency, interspersed with soft areas in the right nasal region. In the cut surface, the mass showed staining grayish-white interspersed with dark areas, which block most of the nasal cavity causing partial lysis of frontal, temporal and tubinates bones, as well as purulent secretion of the frontal sinuses (sinusitis). Microscopically, the mass consisted of mesench

19.
Acta sci. vet. (Impr.) ; 40(3): 01-04, 2012.
Artigo em Português | LILACS-Express | VETINDEX | ID: biblio-1457012

Resumo

Background: Wry Nose (Campylorrhinus lateralis) is a congenital shortening and deviation of the maxillae, premaxillae, nasal bones, vomer, and nasal septum that affects mainly foals. Intrauterine positioning as an etiology of this deformity is highly unlikely. Clinically, varying degree of premaxillar deviation is noticeable upon inspection of the foals head. The deviation usually results in malocclusion, with no contact between the incisors of the mandible and maxilla. Some foals experience breathing diffi culties or have increased respiratory sounds. This condition will not self-correct, and a decision should be made to treat the foal using reconstructive techniques or to euthanize it to prevent it from suffering. The objective of this work was to describe a case of wry nose in an adult male equine.Case: A 4-year-old, 300 kg, male SRD equine was submitted for necropsy. There was no history of respiratory problems and trouble with mastication or prehension of food. Three days before death the horse showed clinical sings characterized by no ingestion of food and water, changing behavior and locomotion, weakness, and not respond to calls, seemingly oblivious to the environment evolving into permanent recumbency and death after about 24 h of the decline. The horse was treated by a veterinarian who suspected of leucoencephalomalacea. The animal died 24 h after her condition worse


Background: Wry Nose (Campylorrhinus lateralis) is a congenital shortening and deviation of the maxillae, premaxillae, nasal bones, vomer, and nasal septum that affects mainly foals. Intrauterine positioning as an etiology of this deformity is highly unlikely. Clinically, varying degree of premaxillar deviation is noticeable upon inspection of the foals head. The deviation usually results in malocclusion, with no contact between the incisors of the mandible and maxilla. Some foals experience breathing diffi culties or have increased respiratory sounds. This condition will not self-correct, and a decision should be made to treat the foal using reconstructive techniques or to euthanize it to prevent it from suffering. The objective of this work was to describe a case of wry nose in an adult male equine.Case: A 4-year-old, 300 kg, male SRD equine was submitted for necropsy. There was no history of respiratory problems and trouble with mastication or prehension of food. Three days before death the horse showed clinical sings characterized by no ingestion of food and water, changing behavior and locomotion, weakness, and not respond to calls, seemingly oblivious to the environment evolving into permanent recumbency and death after about 24 h of the decline. The horse was treated by a veterinarian who suspected of leucoencephalomalacea. The animal died 24 h after her condition worse

20.
Tese em Português | VETTESES | ID: vtt-206336

Resumo

Rinites caninas são afecções frequentes no atendimento veterinário e, por possuir sinais inespecíficos, faz-se necessária a utilização de ferramentas diagnósticas que auxiliem na conclusão diagnóstica. Objetivou-se analisar, por meio da radiologia e rinoscopia, a cavidade nasal de 10 cães, de idade, sexo, peso e raças variáveis, acometidos por afecções nasais, relacionar os achados visibilizados nas imagens aos sinais clínicos e confirmar os respectivos diagnósticos por meio de exames histopatológicos. Dentre os dez cães estudados, seis machos e quatro fêmeas, 30% destes pacientes foram diagnosticados presuntivamente pela análise radiográfica e por meio da rinoscopia de serem portadores de rinite linfoplasmocítica, 30% rinite crônica e hiperplásica, 30% com neoformações nasais e 10% com corpos estranhos. Houve elevada convergência entre os achados radiográficos e os sinais visibilizados à rinoscopia com o diagnóstico presuntivo. A interpretação diagnóstica radiográfica foi confirmada positivamente por meio da histopatologia em 90% dos casos e a rinoscopia em 90% dos sinais clínicos visibilizados durante a técnica. A inspeção detalhada das porções internas da cavidade nasal foi detectada através da rinoscopia, e as características das lesões, assim como de suas adjacências foram mais bem definidas ao exame radiográfico. Os resultados obtidos com este estudo permitem concluir que o diagnóstico de rinite em cães deve ser realizado fazendo-se uso dessas duas modalidades imaginológicas. Todavia, o diagnóstico definitivo deve ser concluído por meio da histopatologia, apesar da alta convergência entre o exame radiográfico e da rinoscopia com histopatologia, como ficou definido neste estudo.


Canine rinopathies are common afections in veterinary atendance and for having inespecifics signs is required the use of diagnostic imaging tools that help in diagnostic conclusion. Aimed to analyse trhough radiology and rhinoscopy nasal cavities of 10 dogs with diferent ages, gender, weight and breed afectted by nasal disorders and relationate images findings to clinical signs and define their respectives diagnosis by mean of histopatologic exams. From tem dogs studied, six were males and four females, 30%of these patients were presumptively diagnosed by radiografhy and rhinoscophy analisis to be bearers of lymphoplasmocytic rhinitis, chronic and hyperplastic rhinitis, 30% with nasal neoformation na 10% of foreign bodies. There has been a high convergence of between radiographic findings and visible signs by rinoscopy with the presumptive diagnosis. The radiographic interpretation diagnosis was positively confirmed by means of histopatology in 90% of cases and rhinoscopy in 90% of clincal signs visibilizated during the technique. The detailed inspection of the nasal cavity internal portions was detected by rhinoscopy and the characteristics lesions as well as their surrounding areas were more precisely defined in the radiographic examination. The obtained results with this study lead to conclusion that the diagnosis of dogs rhinities should been undertaken making use of both imaging modalities. However, the definitive diagnosis must be concluded trhough histopatology, despite of the high convergence between of radiographic examination and rhinoscopy with histopalogy, how has been defined in this study.

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