Retroperitoneal fibrosis

Retroperitoneal fibrosis also known as a Ormond's disease is a rare condition that occurs when excess fibrous tissue develops in the retroperitoneal area (space behind stomach and intestine) which It causes a mass to form. This often causes compression and blockage of the ureters, which are the tubes that carry urine from your kidneys to your bladder. Hence urine comes back to ureters. Urine backs up in the ureters can build up harmful materials in blood, and kidney damage can result. Retroperitoneal fibrosis, if left untreated, can cause kidney failure if it isn't treated.