[Iatrogenic secondary retroperitoneal fibrosis (secondary Ormond disease) caused by contrast medium enema, and the treatment of the resulting hydronephrosis with endourethral splinting ("endoprosthesis")].

A case of secondary retroperitoneal fibrosis with bilateral hydronephrosis, following a barium enema is presented. The mechanism of perforation and the ways of perforation are being discussed. The importance of early surgical intervention is stressed. For treatment of the hydronephrosis an endoureterine splinting was indicated.