Cistoadenocarcinoma biliar em felino Relato de caso
ABSTRACT. Cunha V.A.F. Fernandes D.O. Bade P.L. Vieira Filho C.H.C. Cunha V.A.F. Martins Filho E.F. Estrela Lima A. [Biliary cystadenocarcinoma in feline Case report. Cistoadenocarcinoma biliar em felino Relato de caso. Revista Brasileira de Medicina Veterinaria, 38(Supl.1):168 172, 2016. Programa de Pos Graduacao em Ciencia Animal nos Tropicos, Universidade Federal da Bahia, Av. Adhemar de Barros, 500, Ondina, Salvador, BA 40170 110, Brasil. E mail: alestrela@gmail.com Primary hepatobiliary neoplasms are considered rare in cats, representing only 3.0% of tumors in this specie. Biliary cystadenocarcinoma is an epithelial neoplasm, described in humans, considered an unusual tumor. This study aimed to report a case of biliary cystadenocarcinoma in a mixed breed feline, male, with 9 year old, presenting apathy, anorexy, emesis and jaundice. At necropsy, it were observed multiple whitish masses in liver lobes, distributed multifocally, with umbilicated aspect, associated with similar lesions in the lungs, mesenteric lymph nodes, peritoneum and omentum. Histopathological examination of the liver nodules and from other organs, revealed neoplastic proliferation of infiltrative growth, formed by dilated biliary ducts presenting intraluminal papillary projections lined by pleomorphic epithelial cells. Based on macro and microscopic findings, it was signed diagnosis of biliary cystadenocarcinoma with metastasis to lymph nodes, lungs, peritoneum and omentum.