A slowly progressive condition of unknown etiology, characterized by deposition of fibrous tissue in the retroperitoneal space compressing the ureters, great vessels, bile duct, and other structures. When associated with abdominal aortic aneurysm, it may be called chronic periaortitis or inflammatory perianeurysmal fibrosis. [MeSH]

http://www.radlex.org/RID/RID3825

A slowly progressive condition of unknown etiology, characterized by deposition of fibrous tissue in the retroperitoneal space compressing the ureters, great vessels, bile duct, and other structures. When associated with abdominal aortic aneurysm, it may be called chronic periaortitis or inflammatory perianeurysmal fibrosis. [MeSH]

RID3825

http://www.radlex.org/RID/RID35361

retroperitoneal fibrosis

RID1:RID3825

retroperitoneal fibrosis

C0035357

http://www.radlex.org/RID/RID3820