This is a congenital disease. It should not be difficult to diagnose with careful history taking in a female child. A US should be helpful to confirm the anatomical anomaly. Corrective surgery should help.
A Rare Cause of Acute Abdominal Pain: Herlyn-Werner-Wunderlich Syndrome.Aydin, Ramazan MD*; Ozdemir, Ayse Zehra MD†; Ozturk, Bahadir MD*; Bilgici, Meltem Ceyhan MD*; Tosun, Migraci MD† Pediatric Emergency Care: January 2014 - Volume 30 - Issue 1 - p 40–42 doi: 1097/PEC. 0000000000000052