Testicular epidermoid cysts.

To cite: Muoka OE, Dahar N. BMJ Case Rep Published online: [please include Day Month Year] doi:10.1136/bcr-2013009103 DESCRIPTION A 26-year-old man was referred by his general practitioner as an urgent referral based on a 2-week history of a hard right testicular mass. There was no history of trauma, sexually transmitted infections or previous testicular surgery. On examination, a hard 2 cm irregular mass was palpable at the lower pole of the right testis. It was separate from the epididymis and scrotal wall. There was no clinically detectable hydrocoele. The left testis, epididymis and cord structures were normal. His serum α-feto protein , β-human chorionic gonadotropin and lactic dehydrogenase were normal. He had an ultrasound scan of the testis which revealed a 20 mm well-circumscribed ring-shaped intratesticular lesion in the lower pole of the testis with alternate hypoechoic and echogenic layers (onion skin appearance) and normal surrounding testis