Duplicated exstrophy: report of three cases.

Three cases of duplicate exstrophy are described and the theoretical mechanisms of embryogenesis discussed. In all 3 cases there was classic pelvic skeletal deformity. Urinary control was normal in 2 of the 3 patients. The surgical approach consisted of plastic repair of the abdominal wall defect in all patients and correction of urinary incontinence in 1 patient.