Objectives. Although the advent of orthotopic lower urinary reconstruction in women is a major achievement in the evolution of urinary diversion, the mechanism of voiding dysfunction remains incompletely understood. We report on the voiding function of ileal neobladder in 12 female patients. Methods. A neobladder was constructed using an ileal segment. Voiding function was evaluated in terms of voiding pattern and continence. Chain cystography was performed postoperatively to detect the existence of urethral angulation. Median follow-up was 33.2 months (range 8.4 to 77.4). Results. Of the 12 patients, 10 (83.3%) achieved excellent daytime continence, and 6 (50%) had nighttime incontinence despite regular voiding during the night. Three patients (25%) sometimes or often performed self- catheterization because of difficulty in urinating. One patient (8.3%) was unable to void and required regular intermittent catheterization. Chain cystogram revealed urethral angulation in the 3 patients with difficulty in urinating or hypercontinence. Conclusions. An orthotopic neobladder can be constructed in women with excellent functional results. Urethral angulation appears to be one of the main mechanisms for voiding dysfunction, and further studies on the functional anatomy of the female urethra are needed to improve the voiding function of the orthotopic neobladder in women.
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