[The retropenitoneal fibrosis (septennial observation of a female patient) (author's transl)].

It is reported on a septennial observation of a 43 year old woman, who was admitted to the hospital in 1968 with at first unclear symptoms and who developed an azotemia within a few days. The infusion pyelogram showed a hydronephrosis with enlargement of the upper part of the ureter; the lower part of the ureter was normal. After displacement of the ureters out of the fibrotic clasping into a duplicate of the peritoneum, the urine flow has normalized. After 7 years the patient is now healthy and able to work. The cause of the urinary stasis was histologically cleared as retroperitoneal fibrosis.