Uma égua puro sangue árabe, com 3 anos de idade, pertencente ao rebanho experimental da FMVZ-USP apresentou lesões tumorais cutâneas nos membros pélvicos direito e esquerdo com aproximadamente um ano de evolução. Notou-se nova formação cutânea com crescimento rápido na região do pescoço, e desde então, as lesões dos membros ganharam características inflamatórias. Foi realizada punção aspirativa da lesão do pescoço para análise citológica, em que se identificou infiltrado eosinofílico. Optou-se pelo início de tratamento conservativo com três infiltrações intralesionais consecutivas com corticoesteroide. A partir da falta de sucesso das infiltrações foram realizadas as excisões cirúrgicas totais dos nódulos do pescoço, membro pélvico direito e esquerdo. Todos os materiais obtidos dos procedimentos cirúrgicos foram enviados para avaliação histopatológica e imuno-histoquímica, nas quais se confirmou o diagnóstico de mastocitoma cutâneo. O animal recebeu alta após a cicatrização das feridas cirúrgicas e remissão dos sinais, e não demonstrou recidivas ou outras complicações advindas das lesões tumorais. Algumas neoplasias cutâneas são bem descritas e de comum ocorrência na espécie equina, como o sarcoide, melanoma, papiloma e tumor de células escamosas. Já o mastocitoma cutâneo consiste em neoplasia cutânea rara nessa espécie. Segundo a literatura, não parece existir uma predileção racial para o aparecimento deste tumor, entretanto, alguns autores citam o acometimento maior nos animais Puro Sangue Árabe. Para o estabelecimento do diagnóstico definitivo é importante a associação dos exames físico, histopatológico e imuno-histoquímico e, apesar desta neoplasia ser de raro aparecimento nos equinos, deve ser sempre considerada como diagnóstico diferencial.

Legal and technical aspects in exhumation cases of companion animals Aspectos legais e técnicos em casos de exumação em animais de companhia Abstract: Exhumation is a process used very often in forensic medicine and has a huge importance for investigation in cases of doubt about the cause of death, however, the exhumation in veterinary medicine is rare. This study aimed to describe the changes found in necropsy of exhumed dogs and cats, performed in the period of 2008 to 2019, in the Service of Animal Pathology of the Veterinary Hospital of the FMVZ/USP, besides to analyse the frequency of the causes of death and the diagnoses and to transcribe the legal aspects of the human exhumation to veterinary medicine. The complementary exams were performed in all cases, to assist in the ascertainment of the diagnosis, as histopathology exam, image examinations (computed tomography and radiografic examination), molecular tests and toxicology exams. Eight cases of necropsies in exhumed animals were raised. Macroscopic changes could be observed in all cases, among them 50% were related with mecanic and physical lesions and 25% were related to systemic changes. Regarding of the cause of death, 50% died due to neurogenic shock and 25% died of respiratoy failure due to infeccious diseases, 50% being related to non-compliance with article 32 of law number 9.605/98. In 25% of the cases, it was not possible to elucidate the cause of death and the diagnoses. Regarding the technical aspects, the necropsy in exhumed animals and the complementary exams could elucidate the cause of death and the diagnoses in 75% of the cases, being an important exam in cases that involve judicial process. Concerning the legal aspects, it was observed that the absence of specific law to the process of exhumation in animals interfere in the chain of custody maintenance and in the quality of the results of the post mortem exam of the exhumed animals.

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Primary hepatobiliary tumors have low prevalence in dogs and are usually observed in nine to 12-year-old animals. This article reports a case of acute clinical cholangiocarcinoma in a three-year-old Labrador Retriever bitch. The animal had a clinical history of emesis and hyporexia. Physical and laboratory examinations disclosed hyperthermia, jaundice, hypoglycemia, leukocytosis, anemia, thrombocytopenia and coagulopathy. Abdominal ultrasound revealed an enlarged liver of heterogeneous echotexture with hyperechoic and hypoechoic irregular areas. The animal developed severe hemolysis and came to die. Necropsy revealed hepatomegaly and irregular appearance of the liver; metastasis were found in the bone marrow, kidneys and spleen, and neoplastic pulmonary embolism was also observed. Cholangiocarcinoma was identified microscopically. The aim of this report was to describe an atypical case of cholangiocarcinoma because of the precocity of its occurrence.