Mutations of the c-KIT gene in canine mast cell tumors and respective nodal metastases classified according to mast cell infiltration / Mutações no gene c-KIT em mastocitomas caninos e respectivas metástases nodais classificados segundo a infiltração de mastócitos

The molecular background of canine mast cell tumors (MCT) has been extensively investigated; however, the dynamic molecular changes that occur during carcinogenesis and metastasis are not fully understood. This study aimed to evaluate the incidence of mutations in the c-KIT proto-oncogene in canine MCTs and relative draining regional lymph nodes. Suspected or confirmed lymph node metastasis was classified accordingly to the HN Weishaar classification. The study included 34 dogs diagnosed with MCT; 19 patients were enrolled prospectively. These dogs had the primary MCT and regional lymph node resected and analyzed simultaneously. The second group was evaluated retrospectively and included fifteen patients resectioning the primary MCT without evaluation of regional lymph node. Analyzes of c-KIT mutation were performed for all primary MCTs and, in the first group, compared between primary MCT and HN-classified metastasis. Internal tandem duplications (ITD) in exon 11 of the c-KIT gene were detected in 20% of patients. Ten of the nineteen patients (52%) in the first group presented mast cell infiltration in the regional lymph node, and ITD in exon 11 of the c-KIT gene was detected in five and two dogs from Groups 1 and 2, respectively. ITD c-KIT mutations are common in canine MCT and may be found in the draining lymph node metastases/mast cell infiltrates in the absence of mutation of the primary tumor. Evaluation of c-KIT mutation in the primary tumor and metastases may be informative for defining both prognosis and therapeutic options in MCT cases.

O perfil molecular do mastocitoma (MCT) tem sido bastante investigado, no entanto as dinâmicas moleculares que ocorrem durante a carcinogênese e metástase desta neoplasia não estão bem esclarecidas. O objetivo desse estudo foi avaliar a incidência de mutações no proto-oncogene c-KIT em MCTs caninos e respectivos linfonodos regionais. Os casos suspeitos ou confirmados de metástase para os linfonodos, foram classificados de acordo com a classificação HN de Weishaar. O estudo incluiu 34 cães diagnosticados com MCT e, desses, 19 pacientes foram avaliados de maneira prospectiva, em que o tumor primário e o linfonodo regional foram ressecados e analisados simultaneamente. O segundo grupo foi avaliado retrospectivamente e incluiu quinze pacientes que tiveram ressecção do MCT primário sem avaliação de linfonodo regional. A análise da mutação c-KIT foi realizada para todos os MCTs primários e, no primeiro grupo, comparados entre MCT primário e metástase classificada pelo sistema HN. Duplicações internas em tandem (DIT), no exon 11 do gene c-KIT, foram detectadas em um total de 20% dos pacientes. Dez dos dezenove pacientes (52%) do primeiro grupo apresentavam infiltração de mastócitos no linfonodo regional, e DIT no exon 11 do gene c-KIT foram identificadas em cinco e dois cães dos Grupos 1 e 2, respectivamente. Mutações do tipo DIT no gene c-KIT são comuns no MCT canino e podem estar presentes nas metástases/infiltrados de mastócitos na ausência de mutação do tumor primário. A avaliação da mutação no gene c-KIT no tumor primário e metástases pode ser informativa para definir tanto o prognóstico quanto as opções terapêuticas em casos de MCT.

Clinical, histopathological and immunohistochemical features ofa thymoma in a domestic rabbit (Oryctolagus cuniculus): casereport

Thymoma is a neoplasm originating from epithelial cells of the thymus. It represents the most common tumor in the mediastinal region of rabbits, followed by lymphoma. This study aims to report a case of post mortem diagnosis of thymoma in a rabbit (Oryctolagus cuniculus), with the purpose to contribute to the understanding of this disease and its diagnosis in this specie. A six-year-old male mixed breed pet rabbit (O. cuniculus), weighing 2.3 kg, was referred to necropsy exam. The previous clinical history included prostration, lethargy, weight loss, dysorexia and respiratory distress, evidenced mainly on the expiratory phase. Radiographs revealed pleural effusion and the presence of a mass involving the cranial and middle mediastinum, confirmed by ultrasound. In the cytological examination, it was diagnosed as a low-gradelymphoma and chemotherapy was performed with COP (cyclophosphamide, vincristine Oncovin®, prednisolone). However, after 145 days, euthanasia was performed. At necropsy, a well delimited mass was observed in the mediastinal region, adhered to the pleura, with firm consistency and pale coloration. Histopathological analysis of the mass showed the proliferation of epithelial neoplastics cells, arranged in trabeculas and with infiltration of small lymphocytes. The immunohistochemical findings included cytoplasmic immunolabeling for cytokeratin AE1/AE3 in 90% of epithelial neoplastics cells, while CD3 was evidenced in a small number of lymphocytes (T-lymphocytes) and CD79a in Blymphocytes localized on the neoplasia periphery. The growth fraction was estimated at 30% by Ki-67. According to the histopathological criteria for thymoma classification proposed by the World Health Organization, 2015, it was made the diagnosis of lymphocyte-rich predominantly cortical thymoma (B1 type).(AU)

Clinical, histopathological and immunohistochemical features ofa thymoma in a domestic rabbit (Oryctolagus cuniculus): casereport

Thymoma is a neoplasm originating from epithelial cells of the thymus. It represents the most common tumor in the mediastinal region of rabbits, followed by lymphoma. This study aims to report a case of post mortem diagnosis of thymoma in a rabbit (Oryctolagus cuniculus), with the purpose to contribute to the understanding of this disease and its diagnosis in this specie. A six-year-old male mixed breed pet rabbit (O. cuniculus), weighing 2.3 kg, was referred to necropsy exam. The previous clinical history included prostration, lethargy, weight loss, dysorexia and respiratory distress, evidenced mainly on the expiratory phase. Radiographs revealed pleural effusion and the presence of a mass involving the cranial and middle mediastinum, confirmed by ultrasound. In the cytological examination, it was diagnosed as a low-gradelymphoma and chemotherapy was performed with COP (cyclophosphamide, vincristine – Oncovin®, prednisolone). However, after 145 days, euthanasia was performed. At necropsy, a well delimited mass was observed in the mediastinal region, adhered to the pleura, with firm consistency and pale coloration. Histopathological analysis of the mass showed the proliferation of epithelial neoplastics cells, arranged in trabeculas and with infiltration of small lymphocytes. The immunohistochemical findings included cytoplasmic immunolabeling for cytokeratin AE1/AE3 in 90% of epithelial neoplastics cells, while CD3 was evidenced in a small number of lymphocytes (T-lymphocytes) and CD79a in Blymphocytes localized on the neoplasia periphery. The growth fraction was estimated at 30% by Ki-67. According to the histopathological criteria for thymoma classification proposed by the World Health Organization, 2015, it was made the diagnosis of lymphocyte-rich predominantly cortical thymoma (B1 type).

Cutaneous non-epitheliotropic large T-cell lymphoma in an English Bulldog

Cutaneous lymphoma is histologically classified in epitheliotropic and non-epitheliotropic, the first showing higher incidence in dogs, and the second, in cats. Non-epitheliotropic lymphoma presents lymphocyte aggregates in the dermis and subcutaneous tissue, however cutaneous annexes are not infiltrated. It is usually more aggressive than epitheliotropic lymphomas. The aim of this study was to report a case of non-epitheliotropic lymphoma in a 9-year-old, female, English Bulldog presented with non-ulcerated skin nodules adhered to deep tissues. Microscopic and immunophenotypic features supported the diagnosis of non-epitheliotropic large T-cell lymphoma. Treatment was initiated with modification of the LOPP protocol, replacing procarbazine by dacarbazine (600 mg/m²) for up to six cycles, with a three-month survival. In the 11th week of treatment, after recurrent episodes of vomiting and diarrhea, abdominal ultrasound was performed and revealed an infiltrative mass in the stomach’s greater curvature topography, showing an expansive and accentuated increase in one week, when euthanasia was elected.

Cutaneous non-epitheliotropic large T-cell lymphoma in an English Bulldog

Cutaneous lymphoma is histologically classified in epitheliotropic and non-epitheliotropic, the first showing higher incidence in dogs, and the second, in cats. Non-epitheliotropic lymphoma presents lymphocyte aggregates in the dermis and subcutaneous tissue, however cutaneous annexes are not infiltrated. It is usually more aggressive than epitheliotropic lymphomas. The aim of this study was to report a case of non-epitheliotropic lymphoma in a 9-year-old, female, English Bulldog presented with non-ulcerated skin nodules adhered to deep tissues. Microscopic and immunophenotypic features supported the diagnosis of non-epitheliotropic large T-cell lymphoma. Treatment was initiated with modification of the LOPP protocol, replacing procarbazine by dacarbazine (600 mg/m²) for up to six cycles, with a three-month survival. In the 11th week of treatment, after recurrent episodes of vomiting and diarrhea, abdominal ultrasound was performed and revealed an infiltrative mass in the stomachs greater curvature topography, showing an expansive and accentuated increase in one week, when euthanasia was elected.(AU)

Simultaneous osteosarcoma in two limbs of a Maltese dog

Osteosarcoma (OSA) is rarely diagnosed in small breed dogs and it is usually restricted to a single bone, despite its aggressive biological behavior. This paper aims to report a rare case of OSA in an eight-year-old female spayed Maltese dog with simultaneous presentation in thoracic and pelvic limbs, associated with lung and kidney micrometastasis. Physical exam revealed an increase volume in the distal region of the left femur and in the proximal region of the left humerus with intense pain sensibility at palpation. Pelvic limb´s radiographs revealed an extensive area of bone lysis in the distal femur, lamellated periosteal reaction and formation of the Codman triangle, while in the thoracic limb, it was evident a cortical fracture of the proximal humerus and mixed periosteal reaction, suggestive of neoplastic or infectious disease. Cytological analysis showed the presence of a large number of malignant star-shaped cells, with prominent anisocytosis and anisokaryosis, moderate to prominent cellular and nuclear pleomorphism, rare mitotic figures, besides abundant extracellular matrix compatible with osteoid, suggestive of osteosarcoma. Histopathological findings were compatible with OSA. The dog died of a cardiorespiratory arrest and necropsy revealed a grade II osteoblastic osteosarcoma in the humerus and femur, along with renal metastasis and neoplastic emboli in the kidney and lungs.

Simultaneous osteosarcoma in two limbs of a Maltese dog

Osteosarcoma (OSA) is rarely diagnosed in small breed dogs and it is usually restricted to a single bone, despite its aggressive biological behavior. This paper aims to report a rare case of OSA in an eight-year-old female spayed Maltese dog with simultaneous presentation in thoracic and pelvic limbs, associated with lung and kidney micrometastasis. Physical exam revealed an increase volume in the distal region of the left femur and in the proximal region of the left humerus with intense pain sensibility at palpation. Pelvic limb´s radiographs revealed an extensive area of bone lysis in the distal femur, lamellated periosteal reaction and formation of the Codman triangle, while in the thoracic limb, it was evident a cortical fracture of the proximal humerus and mixed periosteal reaction, suggestive of neoplastic or infectious disease. Cytological analysis showed the presence of a large number of malignant star-shaped cells, with prominent anisocytosis and anisokaryosis, moderate to prominent cellular and nuclear pleomorphism, rare mitotic figures, besides abundant extracellular matrix compatible with osteoid, suggestive of osteosarcoma. Histopathological findings were compatible with OSA. The dog died of a cardiorespiratory arrest and necropsy revealed a grade II osteoblastic osteosarcoma in the humerus and femur, along with renal metastasis and neoplastic emboli in the kidney and lungs.(AU)

Doença do corpúsculo de inclusão e espondilite por Salmonella sp. em uma Boa constrictor constrictor / Inclusion body disease and spondilitis by Salmonella sp. in a Boa constrictor constrictor

Doença do corpúsculo de inclusão (IBD) é uma enfermidade caracterizada por corpúsculos intracitoplasmáticos em diversos tecidos, principalmente no sistema nervoso central, responsável pelos principais sinais clínicos atribuídos à doença que acomete Boas e Phytons de cativeiro; essa enfermidade tem sido uma preocupação mundial devido à alta morbidade e mortalidade. O diagnóstico é feito pela visualização dos corpúsculos causados por um Arenavírus modificado. Salmonella sp. pertence à microflora de animais de sangue frio e quente, e é um patógeno oportunista que pode causar quadros gastrointestinais ou septicêmicos. Em répteis a Salmonella sp. é a bactéria com maior frequência de citações em espondilites e osteomielites. Relata-se um caso de uma jiboia (Boa constrictor constrictor) que apresentava restrição de movimento e múltiplos granulomas dorsais nas vértebras; à radiografia evidenciaram-se regiões fraturadas. Após meses de tratamentos sem melhora clínica e o aparecimento de novas lesões o animal ficou prostrado, anoréxico, caquético e desenvolveu opistótono; optou-se pela eutanásia. À necropsia verificaram-se, nas vértebras, múltiplos focos dorsais com aumento de volume que variava de 1,7cm à 3,8cm. Ao corte as vértebras eram deformadas e exibiam conteúdo caseoso focal próximo ao canal medular, este foi coletado para microbiologia onde se identificou Salmonella sp. À microscopia as vértebras tinham um infiltrado inflamatório multifocal moderado de macrófagos e heterofilos. Algumas áreas possuíam grande quantidade de granulomas com calcificação central e inúmeras células gigantes; outros mostravam áreas de osteomalácia e fibrose. Em raros focos havia fratura do corpo vertebral e compressão da medula espinhal com leve infiltrado inflamatório invadindo o canal medular. No pulmão, principalmente no epitélio brônquico, por vezes até dentro de linfócitos do tecido linfoide bronco-associado, no intestino, fígado, vesícula biliar, nos rins e no encéfalo foram encontradas diversas estruturas eosinofílicas intracitoplasmáticas arredondadas que variavam de 1 a 10 µm. Essas estruturas acompanhavam ou não inflamações mononucleares. Os achados são compatíveis com IBD e espondilite por salmonelose. A IBD é uma enfermidade frequente em serpentes de cativeiro, de importância mundial, que provavelmente é subdiagnosticada no Brasil. Essa doença causa imunossupressão que favorece ao desenvolvimento de outras enfermidades, e é tipicamente associada a outras doenças como a espondilite encontrada no caso.(AU)

Inclusion Body Disease (IBD) is a disorder characterized by intracytoplasmic corpuscles in different tissues, mainly in the CNS, wich is responsible for the major neurological signs attributable to this disease. It affects Boas and Phytons in captivity and have been a global concern due to the high morbidity and mortality. The diagnosis is made by visualization of corpuscles caused by a modified Arenaviruses. Salmonella sp. belongs to microflora of cold and warm-blooded animals; it is an opportunistic pathogen that can causes gastrointestinal or septic disorders. In reptiles, Salmonella sp. is the bacteria most frequently quotes in spondylitis and osteomyelitis. This article describes a boa constrictor (Boa constrictor constrictor) that had restriction of movement and multiple granulomas in the dorsal vertebrae, the shadowgraph showed up fractured regions. After months of treatment without clinical improvement and the emergence of new injuries, the animal started to get prostrate, anorexic, cachectic and developed opisthotonos. It was opted for euthanasia. At necropsy it was found in multiple spots swelling of the dorsal vertebrae that ranging from mild to moderate. At the cutting vertebrae it was visible deformed and showed focal caseous content near the spinal cord, this was collected for microbiology where it was identified Salmonella sp. At microscopic evaluation the vertebrae had one to multifocal moderate inflammatory infiltrate of macrophages and heterophils. Some areas had lots of granulomas with central calcification and numerous giant cells. Other vertebras showed areas of osteomalácea and fibrosis. Rare focus had vertebral body fracture and spinal cord compression with mild infiltration entering the spinal cord canal. In the lung, especially in the bronchial epithelium, sometimes even within lymphocytes in bronchial-associated lymphoid tissue, in the intestine, liver, gall bladder, kidney and brain were found various structures of eosinophilic intracytoplasmic rounded ranging between 1 and 10 micrometers. These structures accompanied or not mononuclear inflammation. These findings are consistent with IBD and spondylitis due to salmonellosis. The IBD is a common disease in captive snakes, of world importance, is probably underdiagnosed in Brazil. This disease causes immunosuppression favoring the development of other affections, and is typically associated with other diseases such as spondylitis found in the case.(AU)

Pathological and parasitological characterization of Prosthenorchis elegans in a free-ranging marmoset Callithrix geofroyi from the Brazilian Atlantic Forest / Caracterização patológica e parasitológica de Prosthenorchis elegans em Callithrix geoffroyi primate de vida livre da Mata Atlântica

Prosthenorchis elegans is an acanthocephalan intestinal parasite reported in neotropical primates. Despite parasitism by P. elegans having already been described in wild marmosets in the Brazilian Atlantic Forest, there are no reports of this infection in wild Geoffroy's marmoset (Callithrix geofroyi). The aim of this study is to report one case of P. elegans parasitism in a free-ranging C. geoffroyi from Brazilian Atlantic Forest in Espírito Santo state, and characterize the pathological and parasitological findings of this infection. One Geoffroy's marmoset necropsied at the Vila Velha University's Veterinary Pathology Laboratory presented intense chronic transmural ulcerative enteritis associated with twenty cylindrical helminths present in the jejunum and ileum. We can conclude that parasitism by P. elegans occurs in free-ranging groups of Geoffroy's marmosets. Its infection produced severe intestinal lesions even in free-ranging marmoset and therefore is a threat to this animal's survival in wildlife and can have some impact on primate conservation in the Brazilian Atlantic Forest.(AU)

Prosthenorchis elegans é um acantocéfalo intestinal descrito em primatas neotropicais. Apesar do parasitismo por P. elegans já ter sido descrito de saguis da Mata Atlântica brasileira, não há relatos da infecção em saguis-da-cara-branca (Callithrix geofroyi) de vida livre. O objetivo deste estudo é relatar um caso de parasitismo por P. elegans em um C. geoffroyi de vida livre proveniente da Mata Atlântica brasileira no Estado do Espírito Santo e caracterizar os achados patológicos e parasitológicos dessa infecção. Um sagui-da-cara-branca foi necropsiado no Laboratório de Patologia Veterinária da Universidade de Vila Velha, onde foi observada intensa enterite ulcerativa transmural crônica associada a vinte helmintos cilíndricos presentes no jejuno e íleo. Conclui-se que o parasitismo por P. elegans ocorre em grupos livres de saguis-da-cara-branca e a sua infecção leva a lesões intestinais graves; portanto, este parasita pode prejudicar a sobrevivência deste animal na vida selvagem e pode ter algum impacto na conservação de primatas na Mata Atlântica brasileira.(AU)

Doença do corpúsculo de inclusão e espondilite por Salmonella sp. em uma Boa constrictor constrictor / Inclusion body disease and spondilitis by Salmonella sp. in a Boa constrictor constrictor

Doença do corpúsculo de inclusão (IBD) é uma enfermidade caracterizada por corpúsculos intracitoplasmáticos em diversos tecidos, principalmente no sistema nervoso central, responsável pelos principais sinais clínicos atribuídos à doença que acomete Boas e Phytons de cativeiro; essa enfermidade tem sido uma preocupação mundial devido à alta morbidade e mortalidade. O diagnóstico é feito pela visualização dos corpúsculos causados por um Arenavírus modificado. Salmonella sp. pertence à microflora de animais de sangue frio e quente, e é um patógeno oportunista que pode causar quadros gastrointestinais ou septicêmicos. Em répteis a Salmonella sp. é a bactéria com maior frequência de citações em espondilites e osteomielites. Relata-se um caso de uma jiboia (Boa constrictor constrictor) que apresentava restrição de movimento e múltiplos granulomas dorsais nas vértebras; à radiografia evidenciaram-se regiões fraturadas. Após meses de tratamentos sem melhora clínica e o aparecimento de novas lesões o animal ficou prostrado, anoréxico, caquético e desenvolveu opistótono; optou-se pela eutanásia. À necropsia verificaram-se, nas vértebras, múltiplos focos dorsais com aumento de volume que variava de 1,7cm à 3,8cm. Ao corte as vértebras eram deformadas e exibiam conteúdo caseoso focal próximo ao canal medular, este foi coletado para microbiologia onde se identificou Salmonella sp. À microscopia as vértebras tinham um infiltrado inflamatório multifocal moderado de macrófagos e heterofilos. Algumas áreas possuíam grande quantidade de granulomas com calcificação central e inúmeras células gigantes; outros mostravam áreas de osteomalácia e fibrose. Em raros focos havia fratura do corpo vertebral e compressão da medula espinhal com leve infiltrado inflamatório invadindo o canal medular. No pulmão, principalmente no epitélio brônquico, por vezes até dentro de linfócitos do tecido linfoide bronco-associado, no intestino, fígado, vesícula biliar, nos rins e no encéfalo foram encontradas diversas estruturas eosinofílicas intracitoplasmáticas arredondadas que variavam de 1 a 10 µm. Essas estruturas acompanhavam ou não inflamações mononucleares. Os achados são compatíveis com IBD e espondilite por salmonelose. A IBD é uma enfermidade frequente em serpentes de cativeiro, de importância mundial, que provavelmente é subdiagnosticada no Brasil. Essa doença causa imunossupressão que favorece ao desenvolvimento de outras enfermidades, e é tipicamente associada a outras doenças como a espondilite encontrada no caso.(AU)

Inclusion Body Disease (IBD) is a disorder characterized by intracytoplasmic corpuscles in different tissues, mainly in the CNS, wich is responsible for the major neurological signs attributable to this disease. It affects Boas and Phytons in captivity and have been a global concern due to the high morbidity and mortality. The diagnosis is made by visualization of corpuscles caused by a modified Arenaviruses. Salmonella sp. belongs to microflora of cold and warm-blooded animals; it is an opportunistic pathogen that can causes gastrointestinal or septic disorders. In reptiles, Salmonella sp. is the bacteria most frequently quotes in spondylitis and osteomyelitis. This article describes a boa constrictor (Boa constrictor constrictor) that had restriction of movement and multiple granulomas in the dorsal vertebrae, the shadowgraph showed up fractured regions. After months of treatment without clinical improvement and the emergence of new injuries, the animal started to get prostrate, anorexic, cachectic and developed opisthotonos. It was opted for euthanasia. At necropsy it was found in multiple spots swelling of the dorsal vertebrae that ranging from mild to moderate. At the cutting vertebrae it was visible deformed and showed focal caseous content near the spinal cord, this was collected for microbiology where it was identified Salmonella sp. At microscopic evaluation the vertebrae had one to multifocal moderate inflammatory infiltrate of macrophages and heterophils. Some areas had lots of granulomas with central calcification and numerous giant cells. Other vertebras showed areas of osteomalácea and fibrosis. Rare focus had vertebral body fracture and spinal cord compression with mild infiltration entering the spinal cord canal. In the lung, especially in the bronchial epithelium, sometimes even within lymphocytes in bronchial-associated lymphoid tissue, in the intestine, liver, gall bladder, kidney and brain were found various structures of eosinophilic intracytoplasmic rounded ranging between 1 and 10 micrometers. These structures accompanied or not mononuclear inflammation. These findings are consistent with IBD and spondylitis due to salmonellosis. The IBD is a common disease in captive snakes, of world importance, is probably underdiagnosed in Brazil. This disease causes immunosuppression favoring the development of other affections, and is typically associated with other diseases such as spondylitis found in the case.(AU)

Pathological and parasitological characterization of Prosthenorchis elegans in a free-ranging marmoset Callithrix geofroyi from the Brazilian Atlantic Forest / Caracterização patológica e parasitológica de Prosthenorchis elegans em Callithrix geoffroyi primate de vida livre da Mata Atlântica

Prosthenorchis elegans is an acanthocephalan intestinal parasite reported in neotropical primates. Despite parasitism by P. elegans having already been described in wild marmosets in the Brazilian Atlantic Forest, there are no reports of this infection in wild Geoffroy's marmoset (Callithrix geofroyi). The aim of this study is to report one case of P. elegans parasitism in a free-ranging C. geoffroyi from Brazilian Atlantic Forest in Espírito Santo state, and characterize the pathological and parasitological findings of this infection. One Geoffroy's marmoset necropsied at the Vila Velha University's Veterinary Pathology Laboratory presented intense chronic transmural ulcerative enteritis associated with twenty cylindrical helminths present in the jejunum and ileum. We can conclude that parasitism by P. elegans occurs in free-ranging groups of Geoffroy's marmosets. Its infection produced severe intestinal lesions even in free-ranging marmoset and therefore is a threat to this animal's survival in wildlife and can have some impact on primate conservation in the Brazilian Atlantic Forest.(AU)

Prosthenorchis elegans é um acantocéfalo intestinal descrito em primatas neotropicais. Apesar do parasitismo por P. elegans já ter sido descrito de saguis da Mata Atlântica brasileira, não há relatos da infecção em saguis-da-cara-branca (Callithrix geofroyi) de vida livre. O objetivo deste estudo é relatar um caso de parasitismo por P. elegans em um C. geoffroyi de vida livre proveniente da Mata Atlântica brasileira no Estado do Espírito Santo e caracterizar os achados patológicos e parasitológicos dessa infecção. Um sagui-da-cara-branca foi necropsiado no Laboratório de Patologia Veterinária da Universidade de Vila Velha, onde foi observada intensa enterite ulcerativa transmural crônica associada a vinte helmintos cilíndricos presentes no jejuno e íleo. Conclui-se que o parasitismo por P. elegans ocorre em grupos livres de saguis-da-cara-branca e a sua infecção leva a lesões intestinais graves; portanto, este parasita pode prejudicar a sobrevivência deste animal na vida selvagem e pode ter algum impacto na conservação de primatas na Mata Atlântica brasileira.(AU)

Doença do corpúsculo de inclusão e espondilite por Salmonella sp. em uma Boa constrictor constrictor

ABSTRAT: Inclusion Body Disease (IBD) is a disorder characterized by intracytoplasmic corpuscles in different tissues, mainly in the CNS, wich is responsible for the major neurological signs attributable to this disease. It affects Boas and Phytons in captivity and have been a global concern due to the high morbidity and mortality. The diagnosis is made by visualization of corpuscles caused by a modified Arenaviruses. Salmonella sp. belongs to microflora of cold and warm-blooded animals; it is an opportunistic pathogen that can causes gastrointestinal or septic disorders. In reptiles, Salmonella sp. is the bacteria most frequently quotes in spondylitis and osteomyelitis. This article describes a boa constrictor (Boa constrictor constrictor) that had restriction of movement and multiple granulomas in the dorsal vertebrae, the shadowgraph showed up fractured regions. After months of treatment without clinical improvement and the emergence of new injuries, the animal started to get prostrate, anorexic, cachectic and developed opisthotonos. It was opted for euthanasia. At necropsy it was found in multiple spots swelling of the dorsal vertebrae that ranging from mild to moderate. At the cutting vertebrae it was visible deformed and showed focal caseous content near the spinal cord, this was collected for microbiology where it was identified Salmonella sp. At microscopic evaluation the vertebrae had one to multifocal moderate inflammatory infiltrate of macrophages and heterophils. Some areas had lots of granulomas with central calcification and numerous giant cells. Other vertebras showed areas of osteomalácea and fibrosis. Rare focus had vertebral body fracture and spinal cord compression with mild infiltration entering the spinal cord canal. In the lung, especially in the bronchial epithelium, sometimes even within lymphocytes in bronchial-associated lymphoid tissue, in the intestine, liver, gall bladder, kidney and brain were found various structures of eosinophilic intracytoplasmic rounded ranging between 1 and 10 micrometers. These structures accompanied or not mononuclear inflammation. These findings are consistent with IBD and spondylitis due to salmonellosis. The IBD is a common disease in captive snakes, of world importance, is probably underdiagnosed in Brazil. This disease causes immunosuppression favoring the development of other affections, and is typically associated with other diseases such as spondylitis found in the case.

RESUMO: Doença do corpúsculo de inclusão (IBD) é uma enfermidade caracterizada por corpúsculos intracitoplasmáticos em diversos tecidos, principalmente no sistema nervoso central, responsável pelos principais sinais clínicos atribuídos à doença que acomete Boas e Phytons de cativeiro; essa enfermidade tem sido uma preocupação mundial devido à alta morbidade e mortalidade. O diagnóstico é feito pela visualização dos corpúsculos causados por um Arenavírus modificado. Salmonella sp. pertence à microflora de animais de sangue frio e quente, e é um patógeno oportunista que pode causar quadros gastrointestinais ou septicêmicos. Em répteis a Salmonella sp. é a bactéria com maior frequência de citações em espondilites e osteomielites. Relata-se um caso de uma jiboia (Boa constrictor constrictor) que apresentava restrição de movimento e múltiplos granulomas dorsais nas vértebras; à radiografia evidenciaram-se regiões fraturadas. Após meses de tratamentos sem melhora clínica e o aparecimento de novas lesões o animal ficou prostrado, anoréxico, caquético e desenvolveu opistótono; optou-se pela eutanásia. À necropsia verificaram-se, nas vértebras, múltiplos focos dorsais com aumento de volume que variava de 1,7cm à 3,8cm. Ao corte as vértebras eram deformadas e exibiam conteúdo caseoso focal próximo ao canal medular, este foi coletado para microbiologia onde se identificou Salmonella sp. À microscopia as vértebras tinham um infiltrado inflamatório multifocal moderado de macrófagos e heterofilos. Algumas áreas possuíam grande quantidade de granulomas com calcificação central e inúmeras células gigantes; outros mostravam áreas de osteomalácia e fibrose. Em raros focos havia fratura do corpo vertebral e compressão da medula espinhal com leve infiltrado inflamatório invadindo o canal medular. No pulmão, principalmente no epitélio brônquico, por vezes até dentro de linfócitos do tecido linfoide bronco-associado, no intestino, fígado, vesícula biliar, nos rins e no encéfalo foram encontradas diversas estruturas eosinofílicas intracitoplasmáticas arredondadas que variavam de 1 a 10 m. Essas estruturas acompanhavam ou não inflamações mononucleares. Os achados são compatíveis com IBD e espondilite por salmonelose. A IBD é uma enfermidade frequente em serpentes de cativeiro, de importância mundial, que provavelmente é subdiagnosticada no Brasil. Essa doença causa imunossupressão que favorece ao desenvolvimento de outras enfermidades, e é tipicamente associada a outras doenças como a espondilite encontrada no caso.

Dysgerminoma and granulosa cell tumor in a bitch

Dysgerminoma and granulosa cell tumor are neoplasms of the ovary of domestic animals, originating from germ cells and sex-cords cells, respectively. These neoplasms generally occur unilaterally, and usually as a single neoplasm. This report describes a case of a dysgerminoma in the right ovary and a granulosa cell tumor in the left ovary in a six years old bitch. An Akita and Siberian Husky crossbred bitch was admitted at the Veterinary Hospital (Universidade Vila Velha), with a history of purulent vaginal discharge, irregular estrous cycle, fatigue, polydipsia and polyuria. Ultrasound exam demonstrated bilateral ovarian neoplasms, and the animal was subjected to ovariohysterectomy. Macroscopic and microscopic features found in right and left ovaries were typical of dysgerminoma and granulosa cells tumor Sertoli-like, respectively. The uterus had cystic endometrial hyperplasia associated with mild metritis. Ovarian neoplasms occurring bilaterally are uncommon especially with different cell origins and distinct histopathological patterns in each ovary as described in this report.

Dysgerminoma and granulosa cell tumor in a bitch

Dysgerminoma and granulosa cell tumor are neoplasms of the ovary of domestic animals, originating from germ cells and sex-cords cells, respectively. These neoplasms generally occur unilaterally, and usually as a single neoplasm. This report describes a case of a dysgerminoma in the right ovary and a granulosa cell tumor in the left ovary in a six years old bitch. An Akita and Siberian Husky crossbred bitch was admitted at the Veterinary Hospital (Universidade Vila Velha), with a history of purulent vaginal discharge, irregular estrous cycle, fatigue, polydipsia and polyuria. Ultrasound exam demonstrated bilateral ovarian neoplasms, and the animal was subjected to ovariohysterectomy. Macroscopic and microscopic features found in right and left ovaries were typical of dysgerminoma and granulosa cells tumor Sertoli-like, respectively. The uterus had cystic endometrial hyperplasia associated with mild metritis. Ovarian neoplasms occurring bilaterally are uncommon especially with different cell origins and distinct histopathological patterns in each ovary as described in this report.(AU)