Basaloid carcinoma of epididymis.

A case of basaloid carcinoma of the right epididymis in a 22-year-old Saudi man is described. The tumor presented as a painless swelling of 2 months' duration. Right inguinal orchiectomy has been performed. Microscopically, the stroma was widely infiltrated by tumor cells, with marked apoptosis and necrosis. The tumor cells were rather uniform and basaloid and contained many abnormal mitoses. The tumor was positive for keratin and contained tight intercellular junctions by ultrastructural examination. The patient was tumor free at last follow-up.