Postmenopausal labial adhesion: A 5-stage classification system and clinical outcomes in a 14-patient series

To characterize postmenopausal labial adhesion, or vulvovaginal obliteration, as the end stage of genitourinary syndrome of menopause, propose a standardized 5-stage classification system, and evaluate outcomes following surgical and maintenance interventions.

A retrospective single-center review was conducted of 14 consecutive postmenopausal women diagnosed with labial adhesion between December 2018 and August 2025. Demographic, clinical, and surgical data were collected. A novel 5-stage clinical classification was applied based on anatomical extent and functional limitation.

Clinical presentation, intervention type, recurrence, and symptom resolution were assessed. Postoperative maintenance strategies were compared between estrogen monotherapy and combined estrogen-dilator therapy.

The mean age was 76 years, with an average of 25 years since menopause and 22 years of sexual inactivity. Thirteen of 14 patients (92.9 %) presented with advanced disease (stages III-V). Common symptoms included urinary retention, weak urinary stream, and post-void dribbling (each 28.6 %). All advanced cases underwent surgical lysis; one stage II case was treated conservatively. Estrogen-only maintenance resulted in recurrence in 3/3 patients. After the protocol change, all subsequent patients received combined estrogen-dilator therapy, with no recurrences during a mean 24-month follow-up. All reported complete symptom resolution and improved quality of life.

This largest series to date defines a reproducible 5-stage classification system for postmenopausal vulvovaginal obliteration. Surgical lysis effectively restores anatomy, but sustained vaginal patency requires maintenance with estrogen and mechanical dilation. Early recognition, standardized staging, and combined therapy may prevent progression and optimize long-term outcomes.