Ultrasound-assisted repair of a unique case of distal vaginal agenesis.

Objective: To describe a unique vaginal outlet obstruction and its ultrasound-assisted surgical correction.

Design: Case report.

Setting: An academic medical center.

Patient(s): A 12-year-old girl was seen with cyclic abdominal pain, nausea, and an abdominal mass. External genital examination revealed no vaginal opening or dimple. Transabdominal ultrasound revealed a large hematometrocolpos 5 cm proximal to the perineum, with an otherwise normal-appearing uterus and ovaries.

Intervention(s): Surgical treatment included perineal incision, creation of a 5-cm passage through connective tissue, drainage of the hematometrocolpos, and mobilization of the proximal vagina, allowing for pull-through vaginoplasty. Ultrasound guidance was used throughout the surgery and allowed for a safe transperineal approach. A vaginal form was placed in the neovagina.

Main Outcome Measure(s): Follow-up clinical evaluation and pelvic ultrasonography.

Result(s): A well-healed perineum and patent 5-cm-long vagina were observed at 4-month follow-up. The patient reported three regular menses. Postoperative pelvic ultrasound scan was normal.

Conclusion(s): We describe a unique case of isolated distal vaginal agenesis of significant length that was successfully treated via a perineal approach with the intra-operative assistance of ultrasound guidance.