Cytology and histopathology of seminoma in a non-cryptorchid dog - A case report

The present report communicates with cytological and histological findings associated with seminoma in a 14 years old non-descript male dog. The dog was presented with the history of anorexia, vomition, polyuria and unilateral testicular swelling. Radiography and physical examination revealed scrotal enlargement of right testis but non-cryptorchid. Fine needle aspiration cytology of affected testicle was performed and revealed pleomorphic cells with coarse chromatin along with infiltration of few lymphocytes gave seminoma as presumptive diagnosis. Haematology revealed absolute neutrophilia while serum chemistry showed raised alanine aminotransferase, blood urea nitrogen and creatinine enzymes. On histopathological examination, neoplastic cells showed pleomorphism, anisocytosis, vesicular nuclei, and prominent nucleoli along with scanty basophilic cytoplasm. There was also presence of numerous mitotic figures. Based on cytological and histological findings, the present case was diagnosed as seminoma.