Mesotelioma epitelial disseminado subtipo tubular em cão: relato de caso

Abstract

Mesothelioma is a rare and highly aggressive malignant neoplasm that originates in the serous membranes lining the pleural and peritoneal cavities. The clinical signs of this condition are typically related to the accumulation of effusion within the affected cavities. This report describes the case of an 11-year-old female Boxer dog presented to the Veterinary Hospital of the Federal University of Uberlândia with anorexia, progressive weight loss, ascites, and pleural effusion. Mesothelioma was suspected after cytopathological analysis of the collected fluid and the recurrence of effusion episodes. The definitive diagnosis was confirmed through necropsy and histopathological examination following the euthanasia of the animal, which was performed due to the poor prognosis. The tumor was identified as disseminated tubular epithelial mesothelioma, with metastases to ovary and brain. This case is particularly noteworthy due to its rarity in dogs, especially given the extensive metastatic spread to multiple organs.