A case against incorporation of bowel segments into the closed urinary system.

Five patients in whom isolated ileal or ileocecal segments had been incorporated into the urinary tract suffered complications that ended in excision of the bowel segment. A bowel segment functions if it does not meet resistance or increased intraluminal pressures. In a closed system these 2 evils are working constantly against the loop of bowel, subjecting it to growing distension, dilatation and redundancy and, inevitably, residual urine, urinary tract infection, stone formation, electrolyte imbalance and progressive deterioration of the upper urinary tract ensue. What was initially meant to save kidney function causes instead renal damage and eventually total loss of function.