Incidence of anal incontinence after long-term follow-up of patients treated by ureterosigmoidostomy.

Twenty-eight patients who had been treated with ureterosigmoidostomy after radical cystectomy were examined with special reference to anal incontinence. In the present series, 17 out of 28 patients (60.7%) had daytime and/or nighttime anal incontinence. In these patients preoperative function of the external and sphincter was considered to be sufficient. Anal incontinence occurred immediately after operation in only 3 patients. Incontinence emerged at an average duration of 2.6 years after ureterocolonic anastomosis. Incidence of anal incontinence after ureterosigmoidostomy appeared to be influenced by aging.