Linfoma renal primário em cão / Primary kidney lymphoma in a dog

Background: Lymphoma is a malignant lymphoid tumor originating in the lymph nodes or other solid organs and comprises90% of all hematopoietic tumors in dogs. However, primary kidney lymphoma is rare and is associated with nonspecificclinical signs. Tumor invasion in both kidneys can cause severe clinical signs due to renal failure, complicating the patient’streatment and prognosis. The aim of this case was to report the case of a dog affected by bilateral primary kidney lymphoma. In addition, to characterize the clinical and histopathological presentation due to the intense morphological changes.Case: A 5-year-old male Poodle dog was admitted showing apathy and emesis for 5 days. On physical examination, thedog showed 10% of dehydration, reddish oral mucous membranes, poor body condition (score 1/5), uremic breath, andpain in the kidney area. Complementary tests revealed severe low white blood cells count, high BUN levels, high levels ofpotassium, calcium, and phosphorus (serum biochemistry). Abdominal ultrasound showed bilateral kidney enlargement.Fine needle aspiration of the mass (guided by ultrasound) revealed round cell tumor. Radiographs showed no alterations.The dog died due to his poor condition and necropsy was performed. On post-mortem examination, the kidneys were bothenlarged, pale, and with an irregular subcapsular surface. The histopathological diagnostic was primary renal lymphoma.Immunohistochemical staining revealed that neoplastic cells were strongly positive for anti CD20 and PAX5, while negative for CD3, supporting the diagnosis of B-cell lymphoma.Discussion: The diagnosis was based on clinical, complementary tests, fine needle aspiration, histopathological andimmunohistochemical findings. In dogs, primary kidney tumors are uncommon and usually malignant. The presence ofvomiting, uremic breath, dehydration, weight loss, and erosive and ulcerative lesions on the tongue (uremic glossitis)...

Linfoma renal primário em cão / Primary kidney lymphoma in a dog

Background: Lymphoma is a malignant lymphoid tumor originating in the lymph nodes or other solid organs and comprises90% of all hematopoietic tumors in dogs. However, primary kidney lymphoma is rare and is associated with nonspecificclinical signs. Tumor invasion in both kidneys can cause severe clinical signs due to renal failure, complicating the patientstreatment and prognosis. The aim of this case was to report the case of a dog affected by bilateral primary kidney lymphoma. In addition, to characterize the clinical and histopathological presentation due to the intense morphological changes.Case: A 5-year-old male Poodle dog was admitted showing apathy and emesis for 5 days. On physical examination, thedog showed 10% of dehydration, reddish oral mucous membranes, poor body condition (score 1/5), uremic breath, andpain in the kidney area. Complementary tests revealed severe low white blood cells count, high BUN levels, high levels ofpotassium, calcium, and phosphorus (serum biochemistry). Abdominal ultrasound showed bilateral kidney enlargement.Fine needle aspiration of the mass (guided by ultrasound) revealed round cell tumor. Radiographs showed no alterations.The dog died due to his poor condition and necropsy was performed. On post-mortem examination, the kidneys were bothenlarged, pale, and with an irregular subcapsular surface. The histopathological diagnostic was primary renal lymphoma.Immunohistochemical staining revealed that neoplastic cells were strongly positive for anti CD20 and PAX5, while negative for CD3, supporting the diagnosis of B-cell lymphoma.Discussion: The diagnosis was based on clinical, complementary tests, fine needle aspiration, histopathological andimmunohistochemical findings. In dogs, primary kidney tumors are uncommon and usually malignant. The presence ofvomiting, uremic breath, dehydration, weight loss, and erosive and ulcerative lesions on the tongue (uremic glossitis)...(AU)

Animal abuse and interpersonal violence from the perspective of veterinarians from Paraíba State, Brazil / Maus-tratos aos animais e violência interpessoal sobre a perspectiva dos Médicos Veterinários do Estado da Paraíba, Brasil

This study aimed to obtain information about the knowledge and attitudes of veterinarians in the state of Paraíba, Brazil, regarding the care of abused animals, the profile of possible aggressors, and their perceptions of the relationship between animal maltreatment and interpersonal violence. For this purpose, an online survey containing 21 questions was made available to veterinarians registered in the Regional Veterinary Medicine Council of Paraíba (CRMV - PB). The chi-square test with a 5% significance level (p < 0.05) was used for statistical analysis. According to the interviewees, 70.7% (53/75) of the abuse victims were small animals. Negligence (68% [51/75]) and the absence of medical care (68% [51/75]) were the most evident forms of abuse. Furthermore, 82.7% (62/75) of them believed in the relationship between animal maltreatment and interpersonal violence. In addition, 90.7% (68/75) of the interviewees responded that they have not experienced technical difficulty in identifying maltreatment. However, 48% (36/75) stated to not know the animal abuse law, 90.7% (68/75) did not report the aggressors, and 81.3% (61/75) stated that the absence of measures by the competent public bodies makes it harder to report the abuse. This study concluded that these professionals will, at some point in their clinical routine, encounter situations of animal maltreatment and human violence, as they are in a privileged position to identify such acts. However, they need more normative knowledge about animal abuse crimes.(AU)

Objetivou-se com esse estudo a obtenção de informações a respeito do conhecimento e atitudes dos Médicos Veterinários do estado da Paraíba, Brasil, acerca dos atendimentos de animais vítimas de maustratos, o perfil dos possíveis agressores e de suas percepções a respeito da conexão entre maus-tratos animais e violência interpessoal. Para tanto foi disponibilizada pesquisa online contendo 21 questões a todos Médicos Veterinários inscritos no Conselho Regional de Medicina Veterinária da Paraíba (CRMV-PB). Para análise estatística foi utilizado o teste de Qui-quadrado com nível de significância de 5% (p<0.05). Segundo os Médicos Veterinários entrevistados, 70,7% (53/75) das vítimas de maus-tratos eram pequenos animais, sendo a negligência [68% (51/75)] e a ausência de atendimento médico [68% (51/75)] os maustratos mais evidenciados. Adicionalmente, 82,7% (62/75) deles acreditavam na conexão entre maustratos animais e violência interpessoal e 90,7% (68/75) responderam não sentir dificuldade técnica em identificar maus-tratos, porém, 48% (36/75) não conheciam a lei que trata sobre os maus-tratos animais, 90,7% (68/75) não realizaram denúncia contra os agressores, e 81,3% (61/75) afirmaram que a ausência de providências por parte dos órgãos públicos competentes dificulta a denúncia. Conclui-se que esses profissionais irão em algum momento de sua rotina clínica se deparar com situações de maus-tratos a animais e violência humana, pois estão em posição privilegiada para identificar tais atos, entretanto, precisam de mais conhecimento normativo sobre os crimes de maus-tratos aos animais.(AU)

Systemic phaeohyphomycosis in a dog caused by Cladophialophora bantiana

Background: Cladophialophora bantiana is a dematiaceous fungus that causes phaeohyphomycosis, a generic term used to describe a variety of unusual mycoses caused by fungi that have melanin in their cell wall. C. bantiana targets the central nervous system, commonly causing localized brain infections that may result in disseminated infections. In Brazil, minimal phaeohyphomycosis data are available, and information about C. bantiana infections in animals, especially canines, is scarce. Thus, the aim of this study was to describe the clinical and pathological aspects of systemic phaeohyphomycosis caused by C. bantiana in a dog. Case: A 1-year-old female Pit Bull presented with weight loss, reduced appetite, and a history of cutaneous lesions on the right thoracic limb; however, clinical evolution was not reported. The bitch had reportedly given birth recently. Physical examination revealed thinness, pale ocular and oral mucosa, submandibular lymph nodes, and enlarged popliteal lymph nodes. The bitch died after convulsive crises during hospitalization. At necropsy, white-yellowish multifocal nodules were observed in the liver and right kidney. The brain featured left cerebral hemisphere asymmetry with blood vessel congestion in the leptomeninges and an irregular brownish focal area on the surface of the right occipital cortex. Cross-sections of the formalin-fi xed brain exhibited compression of the left lateral ventricle and the presence of grayish and friable multifocal areas in the gray matter of the left parietal and right occipital cortices. Fragments of the lesions were collected for histopathological and microbiological examination. Histologically, the lesions were similar, characterized by hepatitis, nephritis, and granulomatous and necrotizing...

Renal resistivity index as an aid in the diagnosis of acute kidney injury in bitches with pyometra / Índice de resistividade renal como auxiliar no diagnóstico de lesão renal aguda em cadelas com piometra

This study aimed to evaluate the renal function of six bitches of various breeds and ages, with open pyometra, attended in the Small Animal Medical Clinic sector of the Veterinary Hospital from Federal University of Campina Grande, through the measurement of laboratory tests: urea and creatinine serum, dosage of the urinary Protein-Creatinine Ratio (PCR), urinary gamma-glutamyltransferase (GGT) and determination of the renal resistivity index (RI). The levels of urea and creatinine were elevated in 16.6% (1/6) of the female dogs; the urinary protein-creatinine ratio was increased in 66.6% (4/6), while the urinary gamma-glutamyltransferase value was elevated in 50% (3/6). The renal resistivity index was increased in the right and left kidneys by 66.6% (4/6) of bitches, with no statistical difference between them. It was concluded that the renal resistivity index was a practical and effective method to assist in the diagnosis of acute kidney injury, along with other early markers, such as PCR and urinary GGT.

Objetivou-se com esse estudo avaliar a função renal de seis cadelas com piometra aberta, de variadas raças e ida-des, atendidas no setor de Clínica Médica de Pequenos Animais do Hospital Veterinário da Universidade Federal de Campina Grande, através da mensuração dos exames laboratoriais: ureia e creatinina séricas, dosagem da relação proteína/creatinina (RPC) urinária, gama-glutamiltransferase (GGT) urinária e determinação do índice de resistividade (IR) renal. Os níveis de ureia e creatinina apresentaram-se elevados em 16,6% (1/6) das cadelas, a relação proteína:creatinina urinária estava aumen-tada em 66,6% (4/6), enquanto o valor de gama-glutamiltransferase urinária encontrou-se elevado em 50% (3/6). O índice de resistividade renal mostrou-se aumentado nos rins direito e esquerdo de 66,6% (4/6) das cadelas, não havendo diferença estatística entre ambos. Concluiu-se que o índice de resistividade renal foi um método prático e eficaz para auxiliar no diag-nóstico da lesão renal aguda, juntamente com outros marcadores precoces, como RPC e GGT urinária.

Ocular echobiometry and resistivity Index of external ophthalmic artery in agoutis (Dasyprocta prymnolopha)

Veterinary Ophthalmology provides complementary information for the diagnosis of ocular pathologies. Studies in wild species are essential. Among the diagnostic techniques in ophthalmology, two-dimensional ultrasonography stands out. The agouti is a rodent belonging to the Dasyproctidae family that has been widely used as an experimental model. For these animals, sight is one of the crucial senses for their survival. The aim of this study was to evaluate the effectiveness of the two-dimensional ocular ultrasound technique to obtain anatomical measurements and the external ophthalmic artery resistivity index, presumably normal in the species Dasyprocta prymnolopha. Forty eye bulbs of 20 adult rodents of the species were evaluated by ultrasonography. In these animals, B-mode echobiometry was performed using the transpalpebral approach and the hemodynamic study of the external ophthalmic artery using the color Doppler technique. All examinations were initiated by the left eye bulb and all measurements were performed by only one examiner. The collected data related to echobiometry were analyzed using Bioest 5.0 for Windows. Initially, normality was tested using the Shapiro-Wilk test for each parameter, then the paired t-test was performed, comparing right and left eyes, and a significance level of 5% (P < 0.05) was adopted. Based on the methodology used, the following values were obtained for the right and left eyeballs, respectively: anterior chamber thickness - mean of 1.28 ± 0.3 mm and 1.22 ± 0.1 mm; lens thickness - 8.27 ± 0.9 mm and 8.11 ± 0.9 mm; vitreous chamber thickness - 5.35 ± 0.48 mm and 5.30 ± 0.47 mm and axial length - 12.7 ± 0.9 mm and 13 ± 0.68 mm. The mean external ophthalmic artery resistivity values were 0.4305 ± 0.0390 and 0.4258 ± 0.0387 (right and left eye, respectively), characterizing a low resistance. There was no statistical difference between the right and left eyeballs in any of the studied parameters. The use of the convex transducer was feasible, promoting adequate contact with the ocular surface and images of satisfactory quality for obtaining measurements, similar to what was observed in studies evaluating the ocular biometry of primates and dogs. The anterior chamber thickness values in this experiment did not differ statistically between the antimers, as well as observed for dogs. The data obtained for lens thickness did not differ statistically for antimers, like those obtained for other rodent species evaluated with the same methodology. The mean values of vitreous chamber thickness were like those observed in chinchillas but correspond to about half of that obtained for capybaras. In this study, the external ophthalmic artery was characterized in all animals, but obtaining the spectral tracing was difficult due to its fine caliber. In wild animals, and especially in wild rodents, there are few data reporting the resistivity of the ophthalmic artery, and there is a lack of studies, which can be explained by the behavioral characteristics of defense and by the high susceptibility to stress in capture, since the performing the technique requires, as in other procedures, the use of chemical containment. (AU)

Renal resistivity index as an aid in the diagnosis of acute kidney injury in bitches with pyometra / Índice de resistividade renal como auxiliar no diagnóstico de lesão renal aguda em cadelas com piometra

This study aimed to evaluate the renal function of six bitches of various breeds and ages, with open pyometra, attended in the Small Animal Medical Clinic sector of the Veterinary Hospital from Federal University of Campina Grande, through the measurement of laboratory tests: urea and creatinine serum, dosage of the urinary Protein-Creatinine Ratio (PCR), urinary gamma-glutamyltransferase (GGT) and determination of the renal resistivity index (RI). The levels of urea and creatinine were elevated in 16.6% (1/6) of the female dogs; the urinary protein-creatinine ratio was increased in 66.6% (4/6), while the urinary gamma-glutamyltransferase value was elevated in 50% (3/6). The renal resistivity index was increased in the right and left kidneys by 66.6% (4/6) of bitches, with no statistical difference between them. It was concluded that the renal resistivity index was a practical and effective method to assist in the diagnosis of acute kidney injury, along with other early markers, such as PCR and urinary GGT.(AU)

Objetivou-se com esse estudo avaliar a função renal de seis cadelas com piometra aberta, de variadas raças e ida-des, atendidas no setor de Clínica Médica de Pequenos Animais do Hospital Veterinário da Universidade Federal de Campina Grande, através da mensuração dos exames laboratoriais: ureia e creatinina séricas, dosagem da relação proteína/creatinina (RPC) urinária, gama-glutamiltransferase (GGT) urinária e determinação do índice de resistividade (IR) renal. Os níveis de ureia e creatinina apresentaram-se elevados em 16,6% (1/6) das cadelas, a relação proteína:creatinina urinária estava aumen-tada em 66,6% (4/6), enquanto o valor de gama-glutamiltransferase urinária encontrou-se elevado em 50% (3/6). O índice de resistividade renal mostrou-se aumentado nos rins direito e esquerdo de 66,6% (4/6) das cadelas, não havendo diferença estatística entre ambos. Concluiu-se que o índice de resistividade renal foi um método prático e eficaz para auxiliar no diag-nóstico da lesão renal aguda, juntamente com outros marcadores precoces, como RPC e GGT urinária.(AU)

Prednisolone associated with doxycycline on the hematological parameters and serum proteinogram of dogs with ehrlichiosis / Efeitos da influência da prednisolona associada à doxiciclina nos parâmetros hematológicos e proteinograma sérico de cães com erliquiose

The objective of the present study was to assess the treatment of dogs with ehrlichiosis (tropical canine pancytopenia (TCP)) with doxycycline hydrochloride associated or not with prednisolone on the hematological profile and serum proteins. Ten dogs with TCP were selected in the Small Animal Medical Clinic Veterinary Hospital, Federal University of Campina Grande-UFCG-PB, Brazil. The diagnosis was obtained by clinical examination, hemogram and immunochromatographic test (with anti Ehrlichia canis antibodies). Samples were distributed randomly in two experimental groups of five animals each (n = 5), named GD and GDP. The GD group was treated with doxycycline (5 mg/kg, VO, BID for 28 days) and the GDP group was treated with doxycycline at the same dose and duration and prednisolone (2 mg/kg, VO, BID, for five days). Four blood collections were made during the treatment period: a base collection (M0), one at 10 days (M10), a second at 21 days (M21) and another at the end of the treatment (M28). These samples were used for the tests erythrogram, leucogram, plateletgram and proteinogram (dose of total proteins, pre-albumin, albumin, albumin, -1 globulin, -2 globulin, ß-globulin, -globulin and C- reactive protein) in the Clinical Pathology Laboratory, Veterinary Hospital-UFCG-PB. Results, that presented normal distribution, was submitted to the Tukey test (P 0.05). Comparison of treatments GD and GDP showed that both promoted discreet and similar response in the hematological parameters at different times. Results obtained allowed the conclusion that both therapeutic protocols resulted in clinical, hematological parameter and proteinogram improvement, but the use of prednisolone at the dose administered during the first five days of treatment did not show more beneficial effects than isolated administration of doxycycline.(AU)

Objetivou-se com este estudo avaliar os efeitos do tratamento de cães com erliquiose monocítica canina (EMC) com cloridrato de doxiciclina associada ou não à prednisolona sobre o perfil hematológico e de proteínas séricas. Foram selecionados, na Clínica Médica de Pequenos Animais do Hospital Veterinário da Universidade Federal de Campina Grande (UFCG), 10 cães com EMC. O diagnóstico foi obtido através de exame clínico, hemograma e teste de imunoensaio imunocromatográfico (com anticorpos anti Ehrlichia canis). As amostras foram distribuídas aleatoriamente em dois grupos experimentais, com cinco animais cada (n=5), denominados GD e GDP. O grupo GD foi tratado com doxiciclina (5 mg/kg, VO, BID durante 28 dias) e o grupo GDP, tratado com doxiciclina na mesma dose e duração e prednisolona (2 mg/kg, VO, BID, durante 5 dias). Durante o período de tratamento, foram realizadas quatro coletas de sangue; uma coleta basal (M0), uma com 10 dias (M10), uma aos 21 dias (M21) e outra ao final do tratamento (M28). Dessas amostras foram realizados eritrograma, leucograma, plaquetograma e proteinograma (dosagem de proteínas totais, pré-albumina, albumina, -1 globulina, -2 globulina, ß-globulina, -globulina e proteína C-reativa) no Laboratório de Patologia Clínica do Hospital Veterinário da UFCG. Os resultados que apresentaram distribuição normal foram submetidos ao teste de Tukey (P 0,05). Ao comparar os tratamentos GD e GDP, observou-se que os dois promoveram resposta discreta e semelhante dos parâmetros hematológicos nos diferentes momentos. Os resultados obtidos permitem concluir que ambos os protocolos terapêuticos resultaram em melhora clínica e dos parâmetros hematológicos e do proteinograma. Porém, o uso da prednisolona na dose empregada durante os primeiros cinco dias de tratamento não demonstrou efeitos mais benéficos do que a administração isolada da doxiciclina.(AU)

Anestesia de cutias (Dasyprocta prymnolopha) com dextrocetamina e midazolam / Anesthesia of agoutis (Dasyprocta prymnolopha) with dextroketamine and midazolam

Research has increasingly focused on wild animals, and this requires the use of chemical restraints that are safe for both the species and the team involved. Dextroketamine is the levorotatory ketamine isomer that has been used on domestic species as an alternative that is more potent and safer than the racemic form. Midazolam is a benzodiazepine that induces muscle relaxation and minimal cardiorespiratory changes. The purpose of this study was to determine whether a combination of dextroketamine and midazolam can be safely used for the chemical restraint of agoutis (Dasyprocta prymnolopha), and the effects of this protocol on physiological and anesthetic parameters. This study was carried out under conditions similar to those found for wild animals in captivity or in zoos. A pre-evaluation was also made to compare the baseline values of this study with those of other studies on the same species. Nine healthy adult agoutis were used, weighing between 1.5 kg and 2 kg. All the parameters were evaluated and recorded before the drugs were applied, and this was considered the baseline moment (M0). The dextroketamine and midazolam combination was then administered intramuscularly, in the same syringe, in dosages of 15 mg/kg and 0.5 mg/kg, respectively. Successive evaluations were made every 10 min over a period of 40 min (M10, M20, M30 and M40). The latency stage of anesthesia, effective stage and recovery stage were observed. Heart rate (HR) and breathing frequency (f), body temperature (BT), systolic blood pressure (SBP), peripheral oxygen saturation (SpO2 ) and electrocardiogram were recorded. HR and SBP showed no significant difference between moments. Breathing frequency (f) showed a significant decline at M10 and M20 when compared to baseline values (P < 0.05). BT decreased from the moment the drugs were administered until the end of the experimental period, with a significant difference between M0 and M40, and M10 and M40 (P < 0.05). SpO2 decreased significantly at M10 and M20 when compared to baseline values (P < 0.01). There was no significant difference in the duration and amplitude of the P wave or in the duration of the QRS complex, QT interval and amplitude of the R wave. Regarding the PR interval, there was a significant difference only at M40 when compared to baseline values (P < 0.05). No arrhythmia was observed. An evaluation of the effects of anesthesia indicated that the animals had an average latency stage of 2 min, an effective stage of 87 min, and an average recovery stage of 111 min. Adverse effects observed during the anesthetic recovery period consisted of tearing, salivation, tongue protrusion, vocalization and chewing reflex. The results indicated that the association of anesthetic drugs under study caused minimal changes in the animals' physiological parameters, except for the breathing frequency (f), which declined considerably, resulting in a reduction in SpO2 , which was compensated during the study. In addition, there was a rapid onset of restraint and a satisfactory duration. Thus, from the cardiorespiratory standpoint, the combination of dextroketamine and midazolam in the doses used provides a safe anesthetic protocol for agoutis (Dasyprocta prymnolopha) and can be used for the chemical restraint of these animals for the performance of non-invasive and short-term procedures.(AU)

Feline sarcoid: case report / Sarcóide Felino: relato de caso

It was aimed to describe the clinical and histopathological characteristics of a case of sarcoid tumor in an adult, mixed-breed female cat, with a history of a small increase of volume on the ear. At physical examination, no alteration was found with the exception of the presence of a rounded dermal nodule of 3.0 x 1.5 x 0.5 cm, ulcerated, well-circumscribed, pedunculated, pinkish, solid-elastic, mobile and painless, located on the skin of the border of the auricular pavilion. In the cytological examination of the nodule, the involvement of a benign mesenchymal neoplasia was found. Furthermore, alterations in the hematological examinations were not observed, nor in the imaging tests, and the serological analyses for infection by the leukemia and immunodeficiency were negative. The surgical excision of the nodule was performed, and then the nodule was submitted to histopathologic examination. Microscopically, was verified superficial and deep dermis distended by a non-encapsulated nodule, covered by intact skin, constituted by fibroblasts disposed in random beams predominantly spaced, at times, interspersed by collagen fibers; epidermis with focally extensive acanthosis, projecting papillae in the direction of the superficial dermis. Furthermore, was observed accentuated orthokeratotic hyperkeratosis and, in occasional vessels, the presence of a discreet lymphoplasmocitary

Objetivou-se descrever as características clínicas e histopatológicas de um caso de sarcoide em uma gata, adulta, sem raça definida, com histórico de pequeno aumento de volume na orelha. Ao exame físico, não constatou-se nenhuma alteração à exceção da presença de um nódulo dérmico arredondado de 3,0 x 1,5 x 0,5 cm, ulcerado, de circunferência circunscrita, pedunculado, rosado, firme-elástico, móvel e indolor, localizado na pele da borda do pavilhão auricular. Ao exame citológico do nódulo, constatou-se o envolvimento de uma neoplasia mesenquimal benigna. Ademais, não foram observadas alterações nos exames hematológicos, nem de imagem e as análises sorológicas para infecção pelo vírus da leucemia e imunodeficiência foram negativas. Procedeu-se com a excisão cirúrgica do nódulo, o qual foi submetido a exame histopatológico. Microscopicamente, verificou-se derme superficial e profunda distendida por nódulo não encapsulado, revestido por pele íntegra, constituído por fibroblastos dispostos em feixes aleatórios predominantemente espaçados e, por vezes, entremeados por fibras colágenas; epiderme com acantose focalmente extensa, projetando papilas em direção à derme superficial. Ademais, observou-se hiperqueratose ortoqueratótica acentuada e, em ocasionais vasos, presença de discreto infiltrado linfoplasmocitário e área focal de hemorragia, compatível com sarcoide felino. Decorridos 11 meses após a conchectomia, não constatou-se recidivas. Este relato alerta a necessidade de incluir esta neoplasia nos diagnósticos diferenciais de neoformações cutâneas em gatos com as características supracitadas.

Babesiose encefálica em cães: aspectos clínicos, epidemiológicos e patológicos / Encephalic babesiosis in dogs: clinical, epidemiological and pathological aspects

Background: Babesiosis is a hemolytic disease caused by protozoa of the genus Babesia spp. responsible for causinganemia, fever and splenomegaly in several animal species. The cerebral involvement of babesiosis in dogs manifests itselfin a hyperacute manner with neurological disorders such as motor incoordination, nystagmus, anisocoria and convulsions.In Brazil there still are no studies which describe the pathological aspects of cerebral babesiosis in dogs together withinformation relating to its clinical aspects and epidemiology. Therefore, this work had as an objective to describe sevencases of canine cerebral babesiosis, emphasizing its epidemiological, clinical and pathological aspects.Materials, Methods & Results: All the records of the necropsies performed in dogs at Animal Pathology Laboratory (LPA/HV) of the Federal University of Campina Grande (UFCG), Patos Campus, Paraíba, Northeast of Brazil were identified. In Theperiod from January 2003 to December 2017. Later, were selected all the cases of cerebral babesiosis. Were included in thestudy the cases in which was possible to detect structures that were morphologically compatible with Babesia spp. trophozoites,intra-erythrocyte in vessels, associated to the presence of lesions in the CNS. For the microscopical description all the histological slides of the cases were revised, in addition to new slides were made with the fragments stored in parafin blocks or withthe material fixed in a 10% formalin solution. The clinical course of the animals studied was hyperacute. In 4 cases, there wassudden death within 24 h, from the appearance of the first symptoms and case 7 presented an evolution of approximately 12 h.The main clinical symptoms described were vocalization, anorexia/hyporexia, jaundice and decubitus. Additionally, the mostconsistente macroscopical findings observed...

Carcinoma de células escamosas multicêntrico com envolvimento de anexos oculares em um cão / Multicentric squamous cell carcinoma with the involvement of the ocular annexes in a dog

Background: The cutaneous squamous cell carcinoma (cSCC) is considered to be a frequent neoplasm in dogs, however,its origin in ocular annexes, especially in relation to the conjuctival location, is a rare finding in dogs. Therefore, it wasaimed to report the occurrence of a multicentric SCC, with the involvement of ocular annexes in a dog, emphasizing itsclinical characteristics and histopathological findings.Case: A 6-year-old non-castrated white-coated Pitbull dog was attended, with a history of increased volume and bloodysecretion in the left eye, with an evolution of approximately six months. By means of general physical examination, ulcerated lesions in the foreskin and scrotum were found. During the ophthalmologic examination was identified an extensiveand irregular exophytic mass, of a reddish color and with a cauliflower-like appearance, located in the inferior bulbarconjunctiva and third eyelid of the left eye, accompanied by a large quantity of piosanguinolenta secretion, mainly duringmanipulation. Other alterations were observed, such as, meibomitis, conjuctival hyperemia, hypopyon, corneal edema andloss of sight. In the right eye, the only alteration found was conjunctival hyperemia. The hemograma revealed discreetanemia; the serum biochemical profile was inside the normal range and there was no evidence of metastasis in the imaging examinations. The animal was submitted to the incisional biopsy of the lesions for histopathological analysis, whichrevealed a proliferation of neoplastic epithelial cells, highly pleomorphic, composed of eosinophilic cytoplasm, whichvaried from scarce to moderate, of indistinct borders, with a large nucleus and loose chromatin and large and evidentnucleolus, compatible with SCC, enabling, also, the classification as multicentric...

Arco corneano bilateral em canino / Bilateral corneal arcus in canine

Background: The cornea is a component of the animal’s eye that is transparent in appearance because of the arrangement of collagen fibrils and the absence of vascularization and pigmentation. Corneal degeneration can result in a lesion known as corneal arcus, which presents as loss of transparency. It is characterized by a dense white opacity with defined borders. This lesion can be caused by lipid keratopathy, occurring as cholesterol and triglyceride deposits in the corneal stroma. In this case, analysis of the serum lipid profile and evaluation of thyroid and pancreas function are recommended. This study aimed to report on a case of occurrence of corneal arcus in a canine. Case: A 6-year-old dog, of no defined breed, weighing 13.250 kg was attended at the Veterinary Hospital of the Universidade Federal de Alagoas with a 5-day history of constipation. Under ultrasound, fecaloma was observed; however, the finding that drew attention was the presence of an eye alteration presenting as bilateral opacity in the form of a vertical arc in the corneal regions, with whitish crystalline appearance. The lesion did not exhibit roughness or vascularization and had well-defined borders. The animal showed no discomfort or visual acuity changes. The tutor reported that the marks had already been on the animal’s eye when it was adopted four years age, and that it showed a slow progressive growth. Given that there were no clinical signs of metabolic or hormonal diseases that could be a primary cause for the formation of the corneal lesion, lipid or calcium deposition in the corneal stroma was suspected, possibly due to diet or idiopathic cause. Blood samples were collected for a blood count and to determine triglyceride, calcium, and cholesterol levels. Based on the test results (all within the normal range), history, and a physical examination (with no evidence of metabolic and/or endocrine diseases), a diagnosis of corneal arcus...

Candidose sistêmica em cães associada à cinomose / Systemic candidosis in dogs associated with canine distemper virus

Background: Candidosis is an opportunistic fungal infection caused by yeasts of the genus Candida, which normally reside on the surfaces of the mucous membranes and in the skin of several animal species and healthy humans; however the fungi can convert into pathogenic microorganisms and result in invasive infections with systemic involvement due to the impairment of the immune system. Systemic candidosis is rare in dogs and few reports of this mycosis are available in literature. Therefore, the objective of this study was to describe three cases of systemic candidosis associated to canine distemper virus in dogs, highlighting the main epidemiological, clinical and pathological aspects. Cases: Three cases of systemic infection by Candida sp. were diagnosed in dogs. The animals predominantly presented neurological clinical manifestations, followed by unspecific alterations with an evolution of 5 to 30 days. Macroscopically, the lesions were characterized by white-yellowish multifocal to coalescent areas surrounded by reddish borders in the kidneys and heart (cases 1, 2 and 3); liver and submandibular lymph node (case 1); and lung (case 2). In the brains of the three dogs were observed multifocal, blackened and/or reddish and friable areas. In case 1, was observed an increased volume of the right carpometacarpal joint, that when cut, released a reddish and turbid content. In case 2, there was deposition of a whitish lumpy material on the epicardial surface, aorta artery, pericardial sac and spleen; infarction on the right testicle, hydroureter, pyelonephritis and hydronephrosis. Microscopically, the lesions consisted of necrossupurative inflammation associated to hemorrhage, vasculitis, congestion, thrombosis, infarction and fungal structures with distinct morphological patterns which included blastoconidia, pseudohyphae and hyphae. The fungal structures were...

Feline sarcoid: case report / Sarcóide Felino: relato de caso

It was aimed to describe the clinical and histopathological characteristics of a case of sarcoid tumor in an adult, mixed-breed female cat, with a history of a small increase of volume on the ear. At physical examination, no alteration was found with the exception of the presence of a rounded dermal nodule of 3.0 x 1.5 x 0.5 cm, ulcerated, well-circumscribed, pedunculated, pinkish, solid-elastic, mobile and painless, located on the skin of the border of the auricular pavilion. In the cytological examination of the nodule, the involvement of a benign mesenchymal neoplasia was found. Furthermore, alterations in the hematological examinations were not observed, nor in the imaging tests, and the serological analyses for infection by the leukemia and immunodeficiency were negative. The surgical excision of the nodule was performed, and then the nodule was submitted to histopathologic examination. Microscopically, was verified superficial and deep dermis distended by a non-encapsulated nodule, covered by intact skin, constituted by fibroblasts disposed in random beams predominantly spaced, at times, interspersed by collagen fibers; epidermis with focally extensive acanthosis, projecting papillae in the direction of the superficial dermis. Furthermore, was observed accentuated orthokeratotic hyperkeratosis and, in occasional vessels, the presence of a discreet lymphoplasmocitary(AU)i

Objetivou-se descrever as características clínicas e histopatológicas de um caso de sarcoide em uma gata, adulta, sem raça definida, com histórico de pequeno aumento de volume na orelha. Ao exame físico, não constatou-se nenhuma alteração à exceção da presença de um nódulo dérmico arredondado de 3,0 x 1,5 x 0,5 cm, ulcerado, de circunferência circunscrita, pedunculado, rosado, firme-elástico, móvel e indolor, localizado na pele da borda do pavilhão auricular. Ao exame citológico do nódulo, constatou-se o envolvimento de uma neoplasia mesenquimal benigna. Ademais, não foram observadas alterações nos exames hematológicos, nem de imagem e as análises sorológicas para infecção pelo vírus da leucemia e imunodeficiência foram negativas. Procedeu-se com a excisão cirúrgica do nódulo, o qual foi submetido a exame histopatológico. Microscopicamente, verificou-se derme superficial e profunda distendida por nódulo não encapsulado, revestido por pele íntegra, constituído por fibroblastos dispostos em feixes aleatórios predominantemente espaçados e, por vezes, entremeados por fibras colágenas; epiderme com acantose focalmente extensa, projetando papilas em direção à derme superficial. Ademais, observou-se hiperqueratose ortoqueratótica acentuada e, em ocasionais vasos, presença de discreto infiltrado linfoplasmocitário e área focal de hemorragia, compatível com sarcoide felino. Decorridos 11 meses após a conchectomia, não constatou-se recidivas. Este relato alerta a necessidade de incluir esta neoplasia nos diagnósticos diferenciais de neoformações cutâneas em gatos com as características supracitadas.(AU)

Arco corneano bilateral em canino / Bilateral corneal arcus in canine

Background: The cornea is a component of the animals eye that is transparent in appearance because of the arrangement of collagen fibrils and the absence of vascularization and pigmentation. Corneal degeneration can result in a lesion known as corneal arcus, which presents as loss of transparency. It is characterized by a dense white opacity with defined borders. This lesion can be caused by lipid keratopathy, occurring as cholesterol and triglyceride deposits in the corneal stroma. In this case, analysis of the serum lipid profile and evaluation of thyroid and pancreas function are recommended. This study aimed to report on a case of occurrence of corneal arcus in a canine. Case: A 6-year-old dog, of no defined breed, weighing 13.250 kg was attended at the Veterinary Hospital of the Universidade Federal de Alagoas with a 5-day history of constipation. Under ultrasound, fecaloma was observed; however, the finding that drew attention was the presence of an eye alteration presenting as bilateral opacity in the form of a vertical arc in the corneal regions, with whitish crystalline appearance. The lesion did not exhibit roughness or vascularization and had well-defined borders. The animal showed no discomfort or visual acuity changes. The tutor reported that the marks had already been on the animals eye when it was adopted four years age, and that it showed a slow progressive growth. Given that there were no clinical signs of metabolic or hormonal diseases that could be a primary cause for the formation of the corneal lesion, lipid or calcium deposition in the corneal stroma was suspected, possibly due to diet or idiopathic cause. Blood samples were collected for a blood count and to determine triglyceride, calcium, and cholesterol levels. Based on the test results (all within the normal range), history, and a physical examination (with no evidence of metabolic and/or endocrine diseases), a diagnosis of corneal arcus...(AU)

Candidose sistêmica em cães associada à cinomose / Systemic candidosis in dogs associated with canine distemper virus

Background: Candidosis is an opportunistic fungal infection caused by yeasts of the genus Candida, which normally reside on the surfaces of the mucous membranes and in the skin of several animal species and healthy humans; however the fungi can convert into pathogenic microorganisms and result in invasive infections with systemic involvement due to the impairment of the immune system. Systemic candidosis is rare in dogs and few reports of this mycosis are available in literature. Therefore, the objective of this study was to describe three cases of systemic candidosis associated to canine distemper virus in dogs, highlighting the main epidemiological, clinical and pathological aspects. Cases: Three cases of systemic infection by Candida sp. were diagnosed in dogs. The animals predominantly presented neurological clinical manifestations, followed by unspecific alterations with an evolution of 5 to 30 days. Macroscopically, the lesions were characterized by white-yellowish multifocal to coalescent areas surrounded by reddish borders in the kidneys and heart (cases 1, 2 and 3); liver and submandibular lymph node (case 1); and lung (case 2). In the brains of the three dogs were observed multifocal, blackened and/or reddish and friable areas. In case 1, was observed an increased volume of the right carpometacarpal joint, that when cut, released a reddish and turbid content. In case 2, there was deposition of a whitish lumpy material on the epicardial surface, aorta artery, pericardial sac and spleen; infarction on the right testicle, hydroureter, pyelonephritis and hydronephrosis. Microscopically, the lesions consisted of necrossupurative inflammation associated to hemorrhage, vasculitis, congestion, thrombosis, infarction and fungal structures with distinct morphological patterns which included blastoconidia, pseudohyphae and hyphae. The fungal structures were...(AU)

Carcinoma de células escamosas multicêntrico com envolvimento de anexos oculares em um cão / Multicentric squamous cell carcinoma with the involvement of the ocular annexes in a dog

Background: The cutaneous squamous cell carcinoma (cSCC) is considered to be a frequent neoplasm in dogs, however,its origin in ocular annexes, especially in relation to the conjuctival location, is a rare finding in dogs. Therefore, it wasaimed to report the occurrence of a multicentric SCC, with the involvement of ocular annexes in a dog, emphasizing itsclinical characteristics and histopathological findings.Case: A 6-year-old non-castrated white-coated Pitbull dog was attended, with a history of increased volume and bloodysecretion in the left eye, with an evolution of approximately six months. By means of general physical examination, ulcerated lesions in the foreskin and scrotum were found. During the ophthalmologic examination was identified an extensiveand irregular exophytic mass, of a reddish color and with a cauliflower-like appearance, located in the inferior bulbarconjunctiva and third eyelid of the left eye, accompanied by a large quantity of piosanguinolenta secretion, mainly duringmanipulation. Other alterations were observed, such as, meibomitis, conjuctival hyperemia, hypopyon, corneal edema andloss of sight. In the right eye, the only alteration found was conjunctival hyperemia. The hemograma revealed discreetanemia; the serum biochemical profile was inside the normal range and there was no evidence of metastasis in the imaging examinations. The animal was submitted to the incisional biopsy of the lesions for histopathological analysis, whichrevealed a proliferation of neoplastic epithelial cells, highly pleomorphic, composed of eosinophilic cytoplasm, whichvaried from scarce to moderate, of indistinct borders, with a large nucleus and loose chromatin and large and evidentnucleolus, compatible with SCC, enabling, also, the classification as multicentric...(AU)

Babesiose encefálica em cães: aspectos clínicos, epidemiológicos e patológicos / Encephalic babesiosis in dogs: clinical, epidemiological and pathological aspects

Background: Babesiosis is a hemolytic disease caused by protozoa of the genus Babesia spp. responsible for causinganemia, fever and splenomegaly in several animal species. The cerebral involvement of babesiosis in dogs manifests itselfin a hyperacute manner with neurological disorders such as motor incoordination, nystagmus, anisocoria and convulsions.In Brazil there still are no studies which describe the pathological aspects of cerebral babesiosis in dogs together withinformation relating to its clinical aspects and epidemiology. Therefore, this work had as an objective to describe sevencases of canine cerebral babesiosis, emphasizing its epidemiological, clinical and pathological aspects.Materials, Methods & Results: All the records of the necropsies performed in dogs at Animal Pathology Laboratory (LPA/HV) of the Federal University of Campina Grande (UFCG), Patos Campus, Paraíba, Northeast of Brazil were identified. In Theperiod from January 2003 to December 2017. Later, were selected all the cases of cerebral babesiosis. Were included in thestudy the cases in which was possible to detect structures that were morphologically compatible with Babesia spp. trophozoites,intra-erythrocyte in vessels, associated to the presence of lesions in the CNS. For the microscopical description all the histological slides of the cases were revised, in addition to new slides were made with the fragments stored in parafin blocks or withthe material fixed in a 10% formalin solution. The clinical course of the animals studied was hyperacute. In 4 cases, there wassudden death within 24 h, from the appearance of the first symptoms and case 7 presented an evolution of approximately 12 h.The main clinical symptoms described were vocalization, anorexia/hyporexia, jaundice and decubitus. Additionally, the mostconsistente macroscopical findings observed...(AU)

Presença de Leishmania sp. e Dirofilaria immitis em / Tumor Venéreo Transmissível Canino cutâneo / Presence of Leishmania sp. and Dirofilaria immitis in Cutaneous Canine Transmissible Venereal Tumor

Background: Canine Transmissible Venereal Tumor (CTVT) is a neoplasm transmitted by implantation of its cells into genitaland extragenital organs, while Heartworm and Visceral Leishmaniasis are zoonosis transmitted by hematophagous insectsthat are often underdiagnosed in asymptomatic animals. Coinfection by the agents of these parasitosis is well documented,however, the association of both diseases with the CTVT is still unusual. Thus, it was aimed to report a case of incidentalidentification of microfilariae of D. immitis and amastigotes forms of Leishmania sp. in cutaneous CTVT by cytology in anasymptomatic dog for the parasitosis.Case: A 6-year-old, male, mongrel, sexually intact dog from the city of Patos, Paraiba, Brazil, was presented with a cutaneouscircumscribed tumoral lesion in a region adjacent to the right olecranon, with an ulcerated surface of reddish color, havingareas of necrosis inside and larvae (myiasis), draining bloody secretion. The material was collected for cytological analysis,which proved to be Canine Transmissible Venereal Tumor (CTVT) with the presence of amastigote forms of Leishmania sp.and microfilariae of D. immitis among neoplastic cells. Blood count, serum urea, creatinine and albumin, ALT, AST, FA,CK, Na+, K+, Ca++, CK-MB, Troponin I (cTnI), Snap 4Dx Plus (Idexx®), Snap Leishmania (Idexx®), and Knott’s test wereperformed, plus chest radiography, blood pressure measurements and electrocardiogram (ECG). The alterations found corresponded to normochromic normocytic anemia, thrombocytopenia, hypoalbuminemia, microfilariae in the Knott test, increaseof CK, CK-MB and cTnI, positivity for Erlichia sp., Anaplasma sp., Leishmania sp. and Dirofilaria immitis. Furthermorecardiomegaly on radiographs and sinus arrhythmia associated with atrioventricular block (AVB) of the first degree on theECG. Euthanasia was performed after necropsy, in which adult worms were...