Paratesticular rhabdomyosarcoma : Report of a case.

Rhabdomyosarcoma is one of the most common soft tissue sarcomas in childhood and adolescent. It usually involves the orbital and pelvic portions of the genitourinary tract and less commonly, the paratesticular tissue. Our report here is of a Thai male who complained of a painless slow growing mass in the left testicular region for 2 years. This mass was noted to have rapidly increased in size within 2 months prior to admission. Only left orchidectomy was performed and the pathological diagnosis was paratesticular embryonal rhabdyosarcoma.