Ureterosigmoidostomy was the method of choice for continent urinary di
version in cases of bladder exstrophy. The development of colonic canc
er at the ureterocolic junction is one of the major complications in t
he late course of this procedure. The risk of large bowel carcinoma is
increased 150-500-fold compared to the general population. Therefore
regular examinations are mandatory. Based on a case report the problem
s associated with ureterosigmoidostomy are presented.