[Experience with the internal splinting method (endoprosthesis) (author's transl)].

We have used internal splints for 20 years; the endoprosthesis creates an internal urinary diversion of dilatated kidneys due to incurable gynecological, prostatic and bladder cancer. Also in pyeloplasties, difficult stone operations and retroperitoneal fibrosis the pyelovesical splinting method is useful. Scanning electron microscopic research shows that incrustations are rare and even not existing if siliconised polyvinylchlorid (PVC) splints are used. The so called "pig-tail"-splint (double-JTM-ureteral stent) is of pure silicone material and therefore well fit for therapy even over a longer period.