女子傍尿道平滑筋腫による尿閉の1例

Abstract

A case of urinary retention due to a female paraurethral leiomyoma is reported. The patient was a 67-year-old female who visited our clinic complaining of urinary retention. Urinary sediment and infravenous pyelography revealed no abnormal findings. An oval-shaped mass was palpated at the anterior vaginal wall. The tumor was 7 X 6 cm in size, elastic hard in consistency, irregular surfaced and well movable. Computed tomography revealed a calcified tumor in the urethrovaginal septum extending over all the urethral length from the bladder neck to the urethral meatus. Cystourethroscopic examination revealed a bladder neck elevation. Transvaginal needle biopsy was performed and the pathological diagnosis was benign leiomyoma. Transvaginal removal of the tumor was performed under the diagnosis of female paraurethral leiomyoma. The tumor was easily dissected from the vaginal wall but was adhered rather firmly to the urethra. The origin of the tumor could not be identified. Postoperatively, urination was improved. Female paraurethral leiomyoma is rare but must be considered as a cause of urinary retention.