Retroperitoneal fibrosis is a rare condition that’s also known as Ormond’s disease. It occurs when excess fibrous tissue develops in the space behind your stomach and intestine called the retroperitoneal area.
Fibrosis is the growth of excess connective tissue, which 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.
Tissue masses can block one or both of your ureters. When urine backs up in the ureters, harmful materials can build up in your blood, and kidney damage can result. The disease can cause kidney failure if it isn’t treated.
• dull pain in the abdomen or back that may be hard to pinpoint
• pain on one side between your upper abdomen and back
• leg pain
• discoloration in one or both legs
• swelling of one leg
• intense abdominal pain with bleeding or hemorrhaging
• severe abdominal or back pain
• appetite loss
• weight loss
• nausea or vomiting
• an inability to urinate
• reduced urine production
• impaired limb movement
• an inability to think clearly
• a low level of red blood cells, which is called anemia
• kidney failure
Courtesy: Health Line