Corpus cavernosum thrombosis: The membrane may play its role.

Partial thrombosis of corpus cavernosum is an uncommon condition that needs a high level of suspicious to be diagnosed. Imaging techniques may be very useful, and MR is the state-of-the-art technique. We present a case of a young male who presented to the emergency department with perineal and painful mass. MR imaging clearly depicted a thrombosed corpus cavernosum and a bilateral membrane that is possibly the underlying predisposing condition. With only conservative treatment the patient had an excellent outcome.