Morphological and immunohistochemical characteristics of diffuse seminoma in horses: A case report.

The present study describes the morphological and immunohistochemical characteristics of a case of diffuse seminoma in a 16-year-old male mixed-breed horse. According to the owner, the animal's left testicle had been gradually increasing in size over a period of 2 months. On palpation, the testicle had a firm consistency, with no sensitivity to digital pressure, was adhered to the scrotum and measuring 16 cm × 8 cm. In the ultrasound examination, it presented a heterogeneous texture and areas of hypoechogenic echogenicity without visualization of the mediastinum. Therefore, the bilateral orchiectomy was performed. After the surgical procedure, it was found that the affected testicle presented a firm mass measuring 9 cm × 7 cm × 3.5 cm. Histologically, a multilobulated, non-encapsulated and invasive tumour mass was found, which replaced the seminiferous tubules, consisting of polygonal cells arranged in a mantle that varied from cohesive to loosely cohesive, supported by a scarce fibrous stroma. In the immunohistochemical examination, the neoplastic cells showed positive immunolabelling for OCT4 and C-KIT. In this report, the physical examination combined with the ultrasonographic examination were fundamental to the therapeutic management of the case, and the final diagnosis was made after histopathological and immunohistochemical tests.

Systemic infection by methicillin-resistant Staphylococcus pseudintermedius in a bitch

Background: Staphylococcus pseudintermedius is an opportunistic pathogen, belonging to the genus Staphylococcus.The methicillin-resistant Staphylococci have the mecA-gene, which confers them with the ability of becoming resistant tomethicillin and multiple classes of antimicrobials, which makes the treatment of the affections caused by these specimensdifficult. This work describes a case of systemic infection and death by methicillin-resistant S. pseudintermedius, in a canine.Case: A crossbred bitch (Canis lupus familiaris), was admitted to the University Veterinary Hospital of the Federal Universityof Western Bahia (HVU-UFOB). The main complaint reported by the owner was the presence of mammary nodules andconstant nasal secretion. During the clinical examination was observed reactivity in the popliteal and left submandibularlymph nodes, pale mucous membranes, stomatitis, bilateral mucopurulent nasal secretion, abdominal pustules, serous secretion in the inguinal mammary gland and focal alopecia on the dorsum. On auscultation, was identified only arrhythmiaand the other physiological parameters of the animal were within normality for the species. Samples of the nasal secretionand of the secretion from the abdominal pustules were collected, and sent to the Veterinary Microbiology Laboratory ofthe same institution. The samples collected were sown in 5% Blood Agar (BA), Sabouraud Agar (SAB) and MacConkeyAgar (MCK), after 24 h was observed in BA the growth of macroscopically white colonies, with a humid aspect, creamyconsistency, with presence of catalase and α-hemolysis. Microscopically, was observed the presence of Gram-positivecocci, suggestive of Staphylococcus sp. Microscopically, was observed the presence of Gram-positive cocci, suggestiveof Staphylococcus sp. In the MALDI-TOF mass spectrometry, was identified S. pseudintermedius. Enrofloxacin [Enrotrat...(AU)

Systemic infection by methicillin-resistant Staphylococcus pseudintermedius in a bitch

Background: Staphylococcus pseudintermedius is an opportunistic pathogen, belonging to the genus Staphylococcus.The methicillin-resistant Staphylococci have the mecA-gene, which confers them with the ability of becoming resistant tomethicillin and multiple classes of antimicrobials, which makes the treatment of the affections caused by these specimensdifficult. This work describes a case of systemic infection and death by methicillin-resistant S. pseudintermedius, in a canine.Case: A crossbred bitch (Canis lupus familiaris), was admitted to the University Veterinary Hospital of the Federal Universityof Western Bahia (HVU-UFOB). The main complaint reported by the owner was the presence of mammary nodules andconstant nasal secretion. During the clinical examination was observed reactivity in the popliteal and left submandibularlymph nodes, pale mucous membranes, stomatitis, bilateral mucopurulent nasal secretion, abdominal pustules, serous secretion in the inguinal mammary gland and focal alopecia on the dorsum. On auscultation, was identified only arrhythmiaand the other physiological parameters of the animal were within normality for the species. Samples of the nasal secretionand of the secretion from the abdominal pustules were collected, and sent to the Veterinary Microbiology Laboratory ofthe same institution. The samples collected were sown in 5% Blood Agar (BA), Sabouraud Agar (SAB) and MacConkeyAgar (MCK), after 24 h was observed in BA the growth of macroscopically white colonies, with a humid aspect, creamyconsistency, with presence of catalase and α-hemolysis. Microscopically, was observed the presence of Gram-positivecocci, suggestive of Staphylococcus sp. Microscopically, was observed the presence of Gram-positive cocci, suggestiveof Staphylococcus sp. In the MALDI-TOF mass spectrometry, was identified S. pseudintermedius. Enrofloxacin [Enrotrat...

Surto de endoparasitose em galinhas caipiras (Gallus gallus domesticus) na Bahia, Brasil / Outbreak of endoparasitosis in free-range chickens (Gallus gallus domesticus) in Bahia, Brazil

Background: Free-range chickens are quite common in Brazil. In this alternative rearing system, the animals are rustic and raised in an extensive system. Free access to "bare soil" results in the increased occurrence of intestinal parasites since larvae and / or eggs of helminths and protozoa oocysts find favorable conditions for their survival and dissemination in the soil. Although the occurrence and importance of parasitic infections in free-range chickens is well known, the objective of this study is to report an outbreak of endoparasites in free-range chickens in the municipality of Barra - BA, in view of bird susceptibility associated with scarcity of studies in western Bahia. Cases: The chickens were kept free, in a bare soil yard in a household at the urban perimeter of the municipality of Barra - BA. Feeding consisted of whole corn grains, thrown directly in the soil. The drinking fountains were dirty and the animals had no history of vaccination or deworming. Symptoms Anorexia, difficulty in eating and in locomotion, presence of seromucous secretion in the oral cavity, emaciation and diarrhea were all observed symptoms. One of the birds presented excessive vocalization, drowsiness and flaccid paralysis of the neck. Necropsy was performed on 3 chickens: 2 females (cases 1 and 2) and 1 male (case 3). Macroscopic analysis revealed the presence of seromucous secretion in the upper respiratory tract of all animals. Specimens of Ascaridia galli were observed in cases 1 and 2, Heterakis gallinarum in cases 2 and 3, Raillietina sp. in cases 2 and 3 and Davainea proglottina in case 1. Microscopically, the animals had an inflammatory infiltrate in the liver and intestines. Some animals presented necrosis of the tracheal epithelial cells, as well as of the epithelial cells present at the apex of the villi. No significant results were found in the coproparasitological exam. Discussion: The diagnosis of endoparasitosis in this outbreak was based on epidemiological, clinical and pathological findings. The prevalence of intestinal parasitosis in free-range chickens is linked to factors such as age, high animal density, absence of sanitary hygienic measures, as well as environmental temperature and humidity. The appearance of injuries in the intestinal mucosa is influenced by characteristics such as parasitic load, concomitant infections, age and the host's immune status. During necropsy of the birds were found 2 helminths of the Nematoda class (Ascaridia galli and Heterakis gallinarum) and 2 of the Cestoda class (Davainea proglottina and Raillietina sp.). A. galli, seen in 2 cases, is considered low pathogenicity for adult chickens, however young birds are susceptible and can die due to intestinal obstruction and hemorrhages. H. gallinarum is responsible for causing typhlitis, with diarrhea and weight loss, this helminth was found in 2 animals in the present study, however only 1 had changes in the digestive tract. Davainea proglotina and Raillietina spp. might cause, respectively, severe hemorrhagic enteritis and nodule formation in the small intestine mucosa. In Brazil, even though it is notable that intestinal parasitism is one of the key problems in alternative poultry farming, there are few studies that evaluate the presence of endoparasites in chickens raised in alternative production systems, with animals being more frequently exposed to nematodes and cestodes. The multiparasitism observed in this study probably stems from flaws in the rearing system, mainly related to sanitary hygiene management. Therefore, the reduction in the occurrence of these helminths is closely related to the performance of basic prophylactic measures, such as offering good quality food and water in clean containers, separating lots by age, performing sanitary emptiness and deworming.(AU)

Nocardiose em gatos - achados clínicos, anatomopatológicos e morfotintoriais / Nocardiosis in cats - clinical, anatomopathological and morphotintorial characteristics

Background: Nocardiosis is an infectious bacterial disease that can cause cutaneous/ subcutaneous, pulmonary and systemic lesions in different species of domestic animals. The type of transmission occurs through mechanical lesions on the skin or contamination of wounds, in cases of skin involvement, inhalation of aerosols and ingestion of contaminated materials are involved in the pathogenesis of the respiratory and digestive form of the disease. This paper described 4 cases of nocardiosis in cats, addressing the clinical, anatomopathological and morphotintorial characteristics of Nocardia sp. Cases: Four cases of nocardiosis in cats were reviewed, in which data related to breed, sex, age, origin, clinical signs, macroscopic and histological lesions described in necropsy protocols were evaluated. The histological tissue sections stained with Hematoxylin and Eosin (HE) were evaluated in order to characterize the inflammatory response in each case. In addition, paraffin blocks of fragments from affected organ were selected to perform special histochemical staining techniques of Grocott Methenamine Silver (GMS), modified Ziehl-Neelsen, Gram Brown-Brenn and Giemsa stain which are the most characterized techniques used for histopathological diagnoses and it was also used an immunohistochemical test with polyclonal antibody anti-Nocardia sp. (non-commercial). The animals were adults of both sexes, mixed breed, not castrated and semi-domesticated. Neither immunosuppressive factors nor concomitant diseases were identified in the cases studied. The main clinical signs were apathy, anorexia, dehydration, phlegmon and draining tracts. Macroscopically, skin / subcutaneous tissue (3/4), skeletal muscle (2/4), lymph nodes (2/4), liver (2/4), omentum (1/4), spleen (1/4) were affected. In addition, it could be noted that mandibular bone (1/4), pleural tissue (1/4), left testicle (1/4) and Central Nervous System (CNS) (1/4) were also affected by this disease. Microscopically, regarding all cases, there was a pyogranulomatous inflammation in the affected organs. With respect to cases 1, 3 and 4, filamentous, branched, slightly basophilic structures in loose or individual aggregates in the interior of the pseudo-rosettes and in the necrotic areas were observed in the HEstained tissue sections. In all cases submitted to special histochemical techniques, filamentous, branched, individual or loose aggregate structures were observed, the samples were impregnated with silver, and bacteria appear as blue using the Brown-Brenn Gram technique, and stained red in the modified Ziehl-Neelsen, and stained faintly pink in Giemsa stain. The bacteria were observed mainly in the border of the pyogranulomas, in the center of the pseudo-rosettes and in the necrotic areas, being compatible with the infection by Nocardia sp. All cases were positive for immunohistochemistry (IHC). Discussion: Nocardiosis was diagnosed in all cats in this study based on the anatomopathological findings associated with the visualization of the agent and its morphotintorial characteristics by using special histochemical stains and being confirmed by IHC. It occurs mainly in the cutaneous and/or subcutaneous tissues, with systemic involvement and death of the affected animals, in addition to affecting bone tissue considered an uncommon site for the disease. The diagnosis can be established based on the anatomopathological findings associated with the morphotintorial characteristics by using special histochemical stains, which are important for evidencing and morphologically characterizing the agent, as well as being confirmed by IHC.

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)

Tricoblastoma em cão: uma análise clínica, diagnóstica e terapêutica / Trichoblastoma in a dog: a clinical, diagnostic and therapeutic analysis

Background: Trichoblastoma is a rare skin neoplasm derived from the primitive hair follicle, having epithelial and mesenchymal components. Despite being commonly described as a benign tumor, there are reports in the literature of tumors with characteristics of malignant neoplasia. It affects adult dogs and cats, with no predilection for sex. Although rare, in studies in Brazil the pathology shows variable rates of occurrence. This work describes a case of tricoblastoma in a 4-year-old mixed breed dog, submitted to care at the Veterinary Hospital of the Federal University of Western Bahia (HVU-UFOB). Case: A 4-year-old male mixed breed dog with 7 kg of body weight, was referred to the HVU-UFOB. The main complaint reported by the canines tutor was an increase in volume in the region of the animals face, which evolved slowly, associated with itching, bleeding and sensitivity to touch. During the physical examination, a round, elevated mass was observed in the subcutaneous tissue of the left face, in the mandible region, with local alopecia. On palpation, the neoformation showed a firm consistency, well-defined and fluctuating, with no solutions for continuity or discomfort to touch. The animals physiological parameters were within the normal for the species. CBC, chest X-rays, abdominal ultrasound and aspiration cytology of the mass were requested. The blood count and image tests did not reveal any changes. On cytological examination, small, grouped basal epithelial cells were observed, characterized by a high nucleus-cytoplasm ratio, monomorphic nuclei and intensely basophilic and pigmented cytoplasm, a suggestive diagnosis of basal cell tumor. Due to the findings, an excisional biopsy of the mass was performed, with margins of 2 cm. The mass with its margins was sent for histopathological examination at the Animal Pathology Laboratory of the HVU...(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...

Tricoblastoma em cão: uma análise clínica, diagnóstica e terapêutica / Trichoblastoma in a dog: a clinical, diagnostic and therapeutic analysis

Background: Trichoblastoma is a rare skin neoplasm derived from the primitive hair follicle, having epithelial and mesenchymal components. Despite being commonly described as a benign tumor, there are reports in the literature of tumors with characteristics of malignant neoplasia. It affects adult dogs and cats, with no predilection for sex. Although rare, in studies in Brazil the pathology shows variable rates of occurrence. This work describes a case of tricoblastoma in a 4-year-old mixed breed dog, submitted to care at the Veterinary Hospital of the Federal University of Western Bahia (HVU-UFOB). Case: A 4-year-old male mixed breed dog with 7 kg of body weight, was referred to the HVU-UFOB. The main complaint reported by the canine’s tutor was an increase in volume in the region of the animal’s face, which evolved slowly, associated with itching, bleeding and sensitivity to touch. During the physical examination, a round, elevated mass was observed in the subcutaneous tissue of the left face, in the mandible region, with local alopecia. On palpation, the neoformation showed a firm consistency, well-defined and fluctuating, with no solutions for continuity or discomfort to touch. The animal’s physiological parameters were within the normal for the species. CBC, chest X-rays, abdominal ultrasound and aspiration cytology of the mass were requested. The blood count and image tests did not reveal any changes. On cytological examination, small, grouped basal epithelial cells were observed, characterized by a high nucleus-cytoplasm ratio, monomorphic nuclei and intensely basophilic and pigmented cytoplasm, a suggestive diagnosis of basal cell tumor. Due to the findings, an excisional biopsy of the mass was performed, with margins of 2 cm. The mass with its margins was sent for histopathological examination at the Animal Pathology Laboratory of the HVU...

Cerebral Candida albicans infection in two dogs

Background: Candida spp. are pleomorphic fungi that are commensal inhabitants of the oral, gastrointestinal, upper respiratory and urogenital mucosa of mammals. Candida albicans is described as the most important species. This opportunistic pathogen may produce local or systemic infections in dogs. Local infections have been reported in several tissues and systemic infection is rare in dogs with few reports in the literature describing this presentation. The aim of the present study was to report two cases of cerebral Candida albicans infection in dogs in Brazil.Case: Two cases of cerebral Candida albicans infection in dogs that showed nervous signs are described. In both cases, the brain showed marked asymmetry of the telencephalic hemispheres with multifocal to coalescing yellowish or reddish areas and a partial loss of distinction between gray and white matter. In Case 1, the mediastinal, tracheobronchial and mesenteric lymph nodes, as well as the right kidney and adrenal gland, showed altered architecture due to numerous whitish gray nodules. Histological lesions were characterized by granulomatous (case 1) or pyogranulomatous (case 2) necrotizing meningoencephalitis with intralesional fungal organisms. In case 1, similar granulomatous infiltrate with intralesional fungal organisms was also seen in the lymph nodes, kidney and adrenal gland. In case 2, there was evidence consistent with an underlying infection of canine distemper virus. Were observed lymphoplasmocytic interstitial pneumonia, lymphoid rarefaction in lymph nodes, and viral intracytoplasmic inclusion bodies in the epithelial cells of the stomach and vesical urothelium. In these two cases, the fungal organisms displayed three different morphological patterns. The first pattern was characterized by delicate tubular structures with thin parallel walls that were rarely septate and tended to undulate slightly, and measured approximately 4-20 µm (true hyphae).[...](AU)

Cerebral Candida albicans infection in two dogs

Background: Candida spp. are pleomorphic fungi that are commensal inhabitants of the oral, gastrointestinal, upper respiratory and urogenital mucosa of mammals. Candida albicans is described as the most important species. This opportunistic pathogen may produce local or systemic infections in dogs. Local infections have been reported in several tissues and systemic infection is rare in dogs with few reports in the literature describing this presentation. The aim of the present study was to report two cases of cerebral Candida albicans infection in dogs in Brazil.Case: Two cases of cerebral Candida albicans infection in dogs that showed nervous signs are described. In both cases, the brain showed marked asymmetry of the telencephalic hemispheres with multifocal to coalescing yellowish or reddish areas and a partial loss of distinction between gray and white matter. In Case 1, the mediastinal, tracheobronchial and mesenteric lymph nodes, as well as the right kidney and adrenal gland, showed altered architecture due to numerous whitish gray nodules. Histological lesions were characterized by granulomatous (case 1) or pyogranulomatous (case 2) necrotizing meningoencephalitis with intralesional fungal organisms. In case 1, similar granulomatous infiltrate with intralesional fungal organisms was also seen in the lymph nodes, kidney and adrenal gland. In case 2, there was evidence consistent with an underlying infection of canine distemper virus. Were observed lymphoplasmocytic interstitial pneumonia, lymphoid rarefaction in lymph nodes, and viral intracytoplasmic inclusion bodies in the epithelial cells of the stomach and vesical urothelium. In these two cases, the fungal organisms displayed three different morphological patterns. The first pattern was characterized by delicate tubular structures with thin parallel walls that were rarely septate and tended to undulate slightly, and measured approximately 4-20 µm (true hyphae).[...]

Indigestão Vagal Incomum Em Caprino Associada A Abscesso Hepático Por Corynebacterium Pseudotuberculosis / Unusual Vagal Indigestion In Goat Associated With Liver Abscess By Corynebacterium Pseudotuberculosis / Indigestión Vagal Incomum En Caprino Asociados Al Absceso Del Hígado Por Corynebacterium Pseudotuberculosis

Relata-se indigestão vagal incomum em caprino, relacionada com a manifestação visceral da linfadenite caseosa, causada por Corynebacterium pseudotuberculosis. Inicialmente o animal apresentou timpanismo recidivante, seguido de diminuição do apetite, perda de peso, desidratação moderada, distensão abdominal e rúmen hipermotílico com movimentos fracos. Na laparoruminotomia exploratória observou-se aumento de volume do líquido peritoneal, aderências do retículo a órgãos adjacentes e aumento de volume e rigidez do fígado. Na necropsia, observou-se que a lesão hepática decorria de abscesso por C. pseudotuberculosis. Abscessos e aderências envolvendo a parede do retículo estão entre as principais causas de quadros de indigestão vagal em bovinos, o que sugere que, essas causas também estejam relacionadas com a indigestão na espécie caprina.

We report unusual vagal indigestion in goats, related to the visceral manifestation of caseous lymphadenitis, caused by Corynebacterium pseudotuberculosis. Initially, the animal presented recurrent bloat, followed by decreased appetite, weight loss, moderate dehydration, abdominal distention and hypermotile rumen with weak movements. In the exploratory laparoruminotomy, there was an increase in volume of the peritoneal fluid, adhesions of the reticulum to adjacent organs and increase of volume and stiffness of the liver. At necropsy, it was observed that the liver lesion was caused by C. pseudotuberculosis. Abscesses and adhesions involving the reticulum wall are among the main causes of vagal indigestion in bovines, suggesting that these causes are also related to indigestion in the goat species.

Se ha informado de la indigestión vagal incomun en las cabras, en relación con la manifestación visceral de la linfadenitis caseosa causada por Corynebacterium pseudotuberculosis. Inicialmente, el animal mostró hinchazón recurrente, seguido de disminución del apetito, pérdida de peso, deshidratación moderada, distensión abdominal y ruminal hipermotílico con movimientos débiles. En el laparoruminotomia exploratorio observado aumento del volumen de fluido peritoneal, la adhesión retícula a órganos adyacentes y la hinchazón y la rigidez del hígado. En la autopsia, se observó que el absceso lesión hepática se deriva de C. pseudotuberculosis. Abscesos y adherencias que involucran la pared del retículo se encuentran entre las principales causas de los marcos de la indigestión vagal en el ganado, lo que sugiere que estas causas también se relacionan con la indigestión en cabras.

Indigestão Vagal Incomum Em Caprino Associada A Abscesso Hepático Por Corynebacterium Pseudotuberculosis / Unusual Vagal Indigestion In Goat Associated With Liver Abscess By Corynebacterium Pseudotuberculosis / Indigestión Vagal Incomum En Caprino Asociados Al Absceso Del Hígado Por Corynebacterium Pseudotuberculosis

Relata-se indigestão vagal incomum em caprino, relacionada com a manifestação visceral da linfadenite caseosa, causada por Corynebacterium pseudotuberculosis. Inicialmente o animal apresentou timpanismo recidivante, seguido de diminuição do apetite, perda de peso, desidratação moderada, distensão abdominal e rúmen hipermotílico com movimentos fracos. Na laparoruminotomia exploratória observou-se aumento de volume do líquido peritoneal, aderências do retículo a órgãos adjacentes e aumento de volume e rigidez do fígado. Na necropsia, observou-se que a lesão hepática decorria de abscesso por C. pseudotuberculosis. Abscessos e aderências envolvendo a parede do retículo estão entre as principais causas de quadros de indigestão vagal em bovinos, o que sugere que, essas causas também estejam relacionadas com a indigestão na espécie caprina.(AU)

We report unusual vagal indigestion in goats, related to the visceral manifestation of caseous lymphadenitis, caused by Corynebacterium pseudotuberculosis. Initially, the animal presented recurrent bloat, followed by decreased appetite, weight loss, moderate dehydration, abdominal distention and hypermotile rumen with weak movements. In the exploratory laparoruminotomy, there was an increase in volume of the peritoneal fluid, adhesions of the reticulum to adjacent organs and increase of volume and stiffness of the liver. At necropsy, it was observed that the liver lesion was caused by C. pseudotuberculosis. Abscesses and adhesions involving the reticulum wall are among the main causes of vagal indigestion in bovines, suggesting that these causes are also related to indigestion in the goat species.(AU)

Se ha informado de la indigestión vagal incomun en las cabras, en relación con la manifestación visceral de la linfadenitis caseosa causada por Corynebacterium pseudotuberculosis. Inicialmente, el animal mostró hinchazón recurrente, seguido de disminución del apetito, pérdida de peso, deshidratación moderada, distensión abdominal y ruminal hipermotílico con movimientos débiles. En el laparoruminotomia exploratorio observado aumento del volumen de fluido peritoneal, la adhesión retícula a órganos adyacentes y la hinchazón y la rigidez del hígado. En la autopsia, se observó que el absceso lesión hepática se deriva de C. pseudotuberculosis. Abscesos y adherencias que involucran la pared del retículo se encuentran entre las principales causas de los marcos de la indigestión vagal en el ganado, lo que sugiere que estas causas también se relacionan con la indigestión en cabras.(AU)

Colite necrohemorrágica causada por Entamoeba histolytica em um cão / Necro-hemorrhagic colitis caused by Entamoeba histolytica in a dog

Background: Intestinal amebiasis with morphological lesions and clinical manifestations is uncommon in dogs. The disease is caused by the protozoan Entamoeba histolytica, which is commonly observed in its natural hosts, humans and some nonhuman primates. It is occasionally found in the company of animals, usually associated with contact with infected humans. Thus, the objective here is to describe a case of necro-hemorrhagic colitis caused by E. histolytica in a dog infected with the canine distemper virus, in order to characterize the epidemiological and clinicopathological aspects of the disease. Case: An adult, mixed-breed bitch displaying anorexia and ataxia was referred to the veterinary hospital for treatment. Clinical evaluation showed a cachectic animal with 12% dehydration, ocular discharge, and bilateral purulent nasal discharge. A clinical diagnosis of distemper was made, and treatment was instituted. The dog’s signs progressed to walking in circles, aimlessly, with lethargy and blindness. After three days of the onset of neurological signs, the dog developed diarrhea with hematochezia. With no improvement noted, we elected to euthanize the dog. At necropsy, edema was present in subcutaneous tissues, and the lungs had yellow areas in the cranio-ventral portions, which the court was flowing purulent discharge. In the large intestine, segmental distention of the distal portion of the descending colon was observed. The segment was approximately 15 cm in length and consisted of irregular reddish areas. There was also slight thickening of the wall with edematous mucosa containing blood clots, fibrin, and multiple areas of ulceration. Microscopically showed necro-hemorrhagic colitis associated with rounded structures, approximately 15 µm in size, containing abundant eosinophilic cytoplasm that was slightly granular or vacuolated. They also contained nuclei and nucleoli that were central or slightly eccentric […]

Colite necrohemorrágica causada por Entamoeba histolytica em um cão / Necro-hemorrhagic colitis caused by Entamoeba histolytica in a dog

Background: Intestinal amebiasis with morphological lesions and clinical manifestations is uncommon in dogs. The disease is caused by the protozoan Entamoeba histolytica, which is commonly observed in its natural hosts, humans and some nonhuman primates. It is occasionally found in the company of animals, usually associated with contact with infected humans. Thus, the objective here is to describe a case of necro-hemorrhagic colitis caused by E. histolytica in a dog infected with the canine distemper virus, in order to characterize the epidemiological and clinicopathological aspects of the disease. Case: An adult, mixed-breed bitch displaying anorexia and ataxia was referred to the veterinary hospital for treatment. Clinical evaluation showed a cachectic animal with 12% dehydration, ocular discharge, and bilateral purulent nasal discharge. A clinical diagnosis of distemper was made, and treatment was instituted. The dogs signs progressed to walking in circles, aimlessly, with lethargy and blindness. After three days of the onset of neurological signs, the dog developed diarrhea with hematochezia. With no improvement noted, we elected to euthanize the dog. At necropsy, edema was present in subcutaneous tissues, and the lungs had yellow areas in the cranio-ventral portions, which the court was flowing purulent discharge. In the large intestine, segmental distention of the distal portion of the descending colon was observed. The segment was approximately 15 cm in length and consisted of irregular reddish areas. There was also slight thickening of the wall with edematous mucosa containing blood clots, fibrin, and multiple areas of ulceration. Microscopically showed necro-hemorrhagic colitis associated with rounded structures, approximately 15 µm in size, containing abundant eosinophilic cytoplasm that was slightly granular or vacuolated. They also contained nuclei and nucleoli that were central or slightly eccentric […](AU)

Infección sistémica en herpes simple en una sagui-de-tufo-branco (Callithrix jacchus) en Semiárido em Paraiba / Systemic infection due to herpes simples virus in a white-tufted-ear marmoset (Callithrix jacchus) in the Semiarid Region of Paraiba, Brasil / Infecção sistêmica por herpesvírus simples em um sagui-de-tufo-branco (Callithrix jacchus) no Semiárido da Paraíba

Describe los aspectos epidemiológicos, clínicos y patológicos de la infección por virus del herpes simple en un Sagui-de-tufo-branco (Callithrix jacchus) la región semiárida de Paraíba. La enfermedad se produjo en una hembra de 7 meses de edad que se encontro prostada con lesiones ulcerosas cutáneas y en la cavidad oral. Un niño con lesiones herpéticas orales aparentemente comparte el mismo alimento con el animal. En la necropsia se observaron lesiones vesiculares y ulceradas en la comisura de la boca, el paladar blando y la lengua. Histopatología había dermatitis facial, estomatitis y glositis pustular y ulcerativa asociada con meningoencefalitis no supurativa con vasculitis y corpúsculos inclusiones intranucleares en las células epiteliales, neuronas y células gliales, inclusiones personajes de tipo Cowdry A. El diagnóstico de la infección por virus del herpesvírus simplex se llevó a cabo por datos epidemiológicos, clínicos y patológicos y confirmada por inmunohistoquímica.(AU)

We describe the epidemiological, clinical and pathological aspects of a herpes virus simples infection in a white-tufted-ear marmoset (Callithrix jacchus) in the semiarid region of Paraiba. The disease occurred in a female marmoset, seven-month-old, which presented prostration and ulcerative lesions in the skin and oral cavity. The owners also informed that a child with oral herpetic lesions shared food with the animal. At necropsy, there were vesicular and ulcerative lesions on the labial commissure, soft palate and tongue were observed. On histopathology, there was facial dermatitis, stomatitis and pustular and ulcerative glossitis associated with nonsuppurative meningoencephalitis and vasculitis containing intranuclear Cowdry A type inclusion bodies in epithelial cells, neurons and glial cells. The diagnosis of herpesvirus simplex infection was performed by the epidemiological, clinical and pathological data and confirmed by immunohistochemistry.(AU)

Descrevem-se os aspectos epidemiológicos, clínicos e patológicos da infecção por herpesvírus simples em um sagui-de-tufo branco (Callithrix jacchus) no semiárido da Paraíba. A doença ocorreu em uma fêmea de 7 meses de idade que se apresentava prostrada e com lesões ulcerativas cutâneas e na cavidade oral. Uma criança com lesões orais herpéticas aparentemente compartilhava o mesmo alimento com o animal. Na necropsia, observaram-se lesões vesiculares e ulcerativas na comissura labial, palato mole e na língua. Na histopatologia, verificou-se dermatite facial, estomatite e glossite pustular e ulcerativa associada à meningoencefalite não supurativa com vasculite e corpúsculos de inclusões intranucleares em células epiteliais, neurônios e células da glia, características de inclusões de Cowdry tipo A. O diagnóstico de infecção pelo herpesvírus simplex foi realizado pelos dados epidemiológicos, clínico-patológicos e confirmado pela imuno-histoquímica.(AU)

Infección sistémica en herpes simple en una sagui-de-tufo-branco (Callithrix jacchus) en Semiárido em Paraiba / Systemic infection due to herpes simples virus in a white-tufted-ear marmoset (Callithrix jacchus) in the Semiarid Region of Paraiba, Brasil / Infecção sistêmica por herpesvírus simples em um sagui-de-tufo-branco (Callithrix jacchus) no Semiárido da Paraíba

Describe los aspectos epidemiológicos, clínicos y patológicos de la infección por virus del herpes simple en un Sagui-de-tufo-branco (Callithrix jacchus) la región semiárida de Paraíba. La enfermedad se produjo en una hembra de 7 meses de edad que se encontro prostada con lesiones ulcerosas cutáneas y en la cavidad oral. Un niño con lesiones herpéticas orales aparentemente comparte el mismo alimento con el animal. En la necropsia se observaron lesiones vesiculares y ulceradas en la comisura de la boca, el paladar blando y la lengua. Histopatología había dermatitis facial, estomatitis y glositis pustular y ulcerativa asociada con meningoencefalitis no supurativa con vasculitis y corpúsculos inclusiones intranucleares en las células epiteliales, neuronas y células gliales, inclusiones personajes de tipo Cowdry A. El diagnóstico de la infección por virus del herpesvírus simplex se llevó a cabo por datos epidemiológicos, clínicos y patológicos y confirmada por inmunohistoquímica.

We describe the epidemiological, clinical and pathological aspects of a herpes virus simples infection in a white-tufted-ear marmoset (Callithrix jacchus) in the semiarid region of Paraiba. The disease occurred in a female marmoset, seven-month-old, which presented prostration and ulcerative lesions in the skin and oral cavity. The owners also informed that a child with oral herpetic lesions shared food with the animal. At necropsy, there were vesicular and ulcerative lesions on the labial commissure, soft palate and tongue were observed. On histopathology, there was facial dermatitis, stomatitis and pustular and ulcerative glossitis associated with nonsuppurative meningoencephalitis and vasculitis containing intranuclear Cowdry A type inclusion bodies in epithelial cells, neurons and glial cells. The diagnosis of herpesvirus simplex infection was performed by the epidemiological, clinical and pathological data and confirmed by immunohistochemistry.

Descrevem-se os aspectos epidemiológicos, clínicos e patológicos da infecção por herpesvírus simples em um sagui-de-tufo branco (Callithrix jacchus) no semiárido da Paraíba. A doença ocorreu em uma fêmea de 7 meses de idade que se apresentava prostrada e com lesões ulcerativas cutâneas e na cavidade oral. Uma criança com lesões orais herpéticas aparentemente compartilhava o mesmo alimento com o animal. Na necropsia, observaram-se lesões vesiculares e ulcerativas na comissura labial, palato mole e na língua. Na histopatologia, verificou-se dermatite facial, estomatite e glossite pustular e ulcerativa associada à meningoencefalite não supurativa com vasculite e corpúsculos de inclusões intranucleares em células epiteliais, neurônios e células da glia, características de inclusões de Cowdry tipo A. O diagnóstico de infecção pelo herpesvírus simplex foi realizado pelos dados epidemiológicos, clínico-patológicos e confirmado pela imuno-histoquímica.

Bronchopulmonary Aspergillosis associated with acute myocardial infarction in dog / Aspergilose pulmonar associado a infarto agudo do miocárdio em cão

Background: Fungi of the genus Aspergillus are ubiquitous microorganisms of opportunistic character, of which animals and humans are continually exposed. Are described three main forms of aspergillosis in dogs: nasal, disseminated and bronchopulmonary. This form which is restricted to the lung parenchyma is considered rare in dogs. The aim of this paper is to report a case of pulmonary aspergillosis associated to acute myocardial infarction in a dog, focusing on epidemiological, clinical, pathological and immunohistochemical characteristics. Case: A male dog, 4-year-old, Pinscher, clinically presented dyspnea, anorexia, vomiting, concentrated urine and dark and mollified faeces. On physical examination, there were congested oral and conjunctival mucosas, dehydration and petechiae in the outer ear. The animal died five days after the clinical attendance and was sent for necropsy. The macroscopic lesions were restricted to the lung, heart and liver. There were multifocal areas of consolidation in the lung parenchyma and yellowish content in the trachea and bronchi lumen. The heart was rounded and with pale areas in the myocardium. Liver was discreet accentuation of the lobular pattern. Histologically the lesion was characterized by pyogranulomatous and necrotizing bronchopneumonia, multifocal to coalescing, moderate, associated with myriads of intralesional hyphae consistent with [...]

Bronchopulmonary Aspergillosis associated with acute myocardial infarction in dog / Aspergilose pulmonar associado a infarto agudo do miocárdio em cão

Background: Fungi of the genus Aspergillus are ubiquitous microorganisms of opportunistic character, of which animals and humans are continually exposed. Are described three main forms of aspergillosis in dogs: nasal, disseminated and bronchopulmonary. This form which is restricted to the lung parenchyma is considered rare in dogs. The aim of this paper is to report a case of pulmonary aspergillosis associated to acute myocardial infarction in a dog, focusing on epidemiological, clinical, pathological and immunohistochemical characteristics. Case: A male dog, 4-year-old, Pinscher, clinically presented dyspnea, anorexia, vomiting, concentrated urine and dark and mollified faeces. On physical examination, there were congested oral and conjunctival mucosas, dehydration and petechiae in the outer ear. The animal died five days after the clinical attendance and was sent for necropsy. The macroscopic lesions were restricted to the lung, heart and liver. There were multifocal areas of consolidation in the lung parenchyma and yellowish content in the trachea and bronchi lumen. The heart was rounded and with pale areas in the myocardium. Liver was discreet accentuation of the lobular pattern. Histologically the lesion was characterized by pyogranulomatous and necrotizing bronchopneumonia, multifocal to coalescing, moderate, associated with myriads of intralesional hyphae consistent with [...](AU)

Surto de histomoníase em frangos caipiras no semiárido da Paraíba, Brasil / Histomoniasis outbreak in free-range chickens in semiarid Paraíba, Brazil

Descreve-se um surto de histomoníase em frangos caipiras (Gallus gallus domesticus) na região semiárida da Paraíba. A doença ocorreu em pintos de aproximadamente 48 dias de idade durante um período de 15 dias. De um total de 16 pintos, sete apresentaram fezes amareladas liquefeitas, anorexia, letargia e morreram com 3 a 5 dias de evolução clínica. A taxa de mortalidade foi de 43,7%. Os pintos eram criados soltos em quintal de chão batido com outras 12 aves adultas que não adoeceram. Não eram vacinados e nem vermifugados. Na necropsia de uma ave as lesões eram restritas ao ceco e ao fígado. O ceco esquerdo estava distendido e na serosa havia áreas amareladas e discretamente elevadas. No fígado havia áreas avermelhadas e deprimidas centralmente, circundadas por halo pálido, distribuídas na superfície capsular e ao corte por todo o parênquima. Microscopicamente verificou-se tiflite e hepatite piogranulomatosa necrosante associada a miríades de Histomonas intralesionais. O tratamento das aves com metronidazol e albendazol foi eficaz no controle da histomoníase. Apesar de ser uma doença rara em frangos caipiras, ela pode ocorrer causando elevada taxa de mortalidade e perdas econômicas significativas.(AU)

We describe an outbreak of histomoniasis in free-range chickens (Gallus gallus domesticus) in the semiarid region of Paraíba State, Brazil. Juvenile chickens aged approximately 48 days showed disease over a 15-day period. Seven of 16 chickens showed yellow, watery stool, anorexia, lethargy, and death within 3-5 days of clinical illness. The mortality rate was 43.7%. The chickens were raised in a backyard with 12 adult birds that remained healthy. None of the chickens were vaccinated or dewormed. A necropsy on one deceased bird showed lesions confined to the cecum and liver. The left cecum was distended and had yellow, slightly elevated areas on the serosa. The liver was reddened with centrally depressed areas surrounded by a pale halo, which were distributed throughout the capsular surface and extended deep throughout the parenchyma. Microscopically, typhlitis and pyogranulomatous necrotizing hepatitis associated with numerous intralesional Histomonas trophozoites was observed. The birds were administered metronidazole and albendazole, which effectively controlled the histomoniasis. Although histomoniasis is rare in free-range poultry, it can occur and cause high mortality and significant economic losses.(AU)