Sertolioma metastático em um cão criptorquida unilateral

Abstract

Testicular tumors are more common and recurrent in dogs than in other domestic animals species. Sertolioma is a neoplasm origined of testis’ sertoli cells. They are benign neoplasms, with low metastatic power, and sometimes presentes clinical signs related to hormonal changes. The aim of this report is to describe a case of a metastatic sertolioma in a 7-year-old cryptorchid dog, male, mixed, that was presented as major complaint a mass in the lateral region of the penis. During the clinical examination, a mass was observed in the hypogastric region, lateral of the penile region. A cytological exam was performed with fine needle aspiration (FNA) technique, and diagnosed transmissible veneral tumor. Chemothrapy was instituted with vincristine, but there was no mass regression. Then, biopsy exam was performed to confirm the diagnosis of metastatic seminoma. After that, orchiectomy and exploratory laparotomy were peformed. Before the surgical procedure, a cytological exam was performed and it diagnosed as tumor of sertoli cells. A biopsy of the sectioned surgical specimen, the cryptorchid testicle, and a cytology of three regions were performed, that could not be removed because of it, and were reffered fot histopathological evaluation, diagnosed as metastatic sertolioma. Although the cytological exam is a paramount importance in clinical and pathological routine, it should be used with caution. Considering the data presented, the importance of the histopathological examination fot he diagnosis of testicular tumors, such as the sertoli tumor is shown.