Ocorrência de tecoma (subtipo tumor estromal esclerosante) em cadela

Relato de caso

Abstract

Thecoma is a rare ovarian neoplasm and its descriptions in veterinary medicine are scarce. The tumor may be sclerosing stromal tumor subtype, accounting for about 2-6% of ovarian origin stromal tumors. This tecoma subtype has not yet been described in female dogs. This study aims to report the occurrence of a large tecoma, classified as sclerosing stromal tumor. The bitch was a 10-year-old Labrador breed, and the diagnosis was established after necroscopic examination. Clinical history consisted of increased abdominal, decreased evacuation and presence of clots in the urine. Histopathological evaluation showed an aggregate of fusiform cells, sometimes oval, arranged in bundles, with central nucleus, clear cytoplasm of vacuolated aspect, indicating the presence of lipids. The diagnosis was confirmed by histochemical technique of Masson's Trichrome, allowing the observation of collagen fibers arranged between the cells, concluding the diagnosis of tecoma of the sclerosing stromal subtype.