Case of early postoperative adhesion in a patient with molimina due to transverse vaginal septum concomitant with imperforate hymen.

Transverse vaginal septum is a residual vaginal plate composed of the Müllerian duct and urogenital sinus. Imperforate hymen results from failure of perforation of the membrane between the urogenital sinus and vaginal cavity. We report a rare case of concurrence of these two conditions. A 16-year-old girl had been treated with puncture several times for hematometra and hematocolpos from 13 years of age because of monthly occurrence of lower abdominal pain without menstrual bleeding and was referred to our hospital. Magnetic resonance imaging demonstrated hematometra, hematocolpos and expansion of the vaginal fornix. The imperforate hymen was incised and a slight adhesion at the lower vaginal cavity was detached. After that, a complete transverse vaginal septum, which was 5 mm thick, was identified. It was excised after ultrasonography-guided puncture. Although two cycles of menstrual bleeding took place, molimina recurred. Re-operation was performed 6 months after the first operation, and recurrence of adhesion in the lower vaginal cavity was identified. A silicon dilator was inserted, but she could not use it at home and instead used a tampon. Cyclic menstrual bleeding is observed 4 months after the second operation.