[Spontaneous transuretero-ureterostomy after complete stenosis of an ileal conduit, with four years of conservative follow-up].

INTRODUCTION Stenosis of an ileal conduit is a rare complication of this urinary diversion. In the case here described, such a complication was neglected for some weeks and left the patient in a high risk situation. After implantation of a bilateral nephrostomy, a spontaneous transuretero-ureterostomy was found. CLINICAL CASE A 70-year-old man with an ileal conduit performed 15 years before because of bladder tumour, was admitted with signs of severe intraabdominal infection and oliguria. The image studies shown intraabdominal abscess, and an almost complete stenosis of the ileal conduit, that was conservatively treated with a bilateral percutaneous nephostomy. After discharged, he reported an accidental falling-out of the right nephrostomy, collecting normal diuresis from the only left nephrostomy. The spontaneous appearance of a transuretero-ureterostomy was demonstrated. The patient refused surgery and remained with a nephrostomy that is periodically changed, and after four years of follow-up he has neither significant kidney dysfunction nor other incidences. COMMENT The origin of this ileal conduit stenosis is related to the inflammatory or immunologic changes induced by the chronic presence of the urine on the wall of the intestinal segment. This case is singular because of the curious result of an in situ transuretero-ureterostomy, and because of the long conservative follow-up, without significant complications, in a patient that keeps a good quality of life.