Rupture of the superficial dorsal vein of the penis.

Unusual causes of acute penis, such as the rupture of a superficial vein of the penis, can mimic fractured penis. The diagnosis in such cases is mostly after exploration. The author describes a case where a high index of clinical suspicion led to the diagnosis of the rupture of a superficial dorsal vein of the penis without exploration. The patient had a successful recovery with conservative management.