Prolapsed fallopian tube masquerading as adenocarcinoma of the vagina in a postmenopausal woman.

A postmenopausal patient with vaginal prolapse of the fallopian tube presented with an erroneous diagnosis of adenocarcinoma of the vaginal apex. Failure to consider fallopian tube prolapse in the differential diagnosis of vaginal adenocarcinoma led to an upper vaginectomy and subsequent complication of a ureterovaginal fistula. The differential diagnosis of adenocarcinoma of the vagina in the postmenopausal patient and the management of vaginal prolapse of the fallopian tube are discussed.