[Retroperitoneal fibrosis. Report of 6 cases].

The authors report six cases of retroperitoneal fibrosis. The mean age is 32 years. Two patients were treated by corticosteroid and ureteric stents with a good outcome; they have normal kidney function. Four patients underwent ureterolysis by wrapping the ureters in omentum. The mean follow-up is 60 months. In the light of theses six cases and review of the literature, the clinical, diagnosis and therapeutic aspects are discussed.