[Epidermoid cysts of testicle: a report of 4 cases]

Epidermoid cysts of testicle is a kind of rare benign tumors of testicle, about 1% of all testicle tumors. In this paper, we described 4 cases of epidermoid cysts of testicle. Based on clinical manifestations, features of B-ultrasound, and other information, epidermoid cysts's histogenesis, pathology and classification were discussed. B-ultrasound is a powerful technique to derive a definite diagnosis before operation. Patients can be cured only by orchiectomy, and much attention should be paid to possible canceration.