[Idiopathic retroperitoneal fibrosis: diagnosis, evolution and therapeutic approach in 8 cases].

Based on 8 cases observed the author attempted to specify the possiblities of diagnosis and therapy of the idiopathic retroperitoneal fibrosis. If the pathogeny is very dark this illness is accompanied by an unspecific chronic inflammatory process. The radiology (U.I.V. and U.P.R.) does permit to affirm the affection. The ureterolysis with bilateral intraperitonization or, in unilateral cases, the extraperitonization of the ureter fixing the peritoneum to the psoas are the most effective surgical methods. They can be combined with the cortico-therapy which permits a recovery of the renal function and improves the ureteral transit.