Labial fusion may occur as a result of lichen sclerosus, lichen planus, genital mutilation, obstetric laceration, and atrophic vaginitis. Koebner phenomenon, or reformation of scar tissue over the clitoris after trauma to the involved tissue, may confound attempts at surgical management.
A 22-year-old nulligravid patient presented with labia minora fusion that had been present since childhood. Her most bothersome symptoms were the recurrence of periclitoral pseudocysts with pain and discharge after spontaneous or needle drainage. Her symptoms and examination findings persisted despite a prolonged course of topical clobetasol, and she desired surgical intervention. A silastic vessel loop was placed through the tract between her clitoris and fused overlying labia. The ends of the vessel loop were brought together and tied in a fashion similar to cutting setons used to manage complex anal fistulae. Over the subsequent weeks, additional ties were used to sequentially tighten the loop and gradually divide the fused labia, ultimately exposing the patient’s normal clitoris, which was uninjured by the procedure. Topical clobetasol was used throughout the process to prevent reagglutination of the labia.
Our experience suggests that adaptation of a cutting seton may be used effectively in the surgical management of labial fusion to allow for gradual division of the skin bridge while minimizing the risk of recurrence of agglutination.