An uncommon cause of abdominal pain in an adolescent.

Imperforate hymen is a rare congenital anomaly which emergency physicians often forget to include in the differential diagnosis of lower abdominal pain in a pubescent girl. These patients often remain asymptomatic until puberty and present in early adolescence with cyclic abdominal pain. This case report reviews the presentation and treatment of an 11-year-old girl with imperforate hymen.