<prompt> Most common clinical presentation of idiopathic retroperitoneal fibrosis isUreteral obstructionLeg edemaCalf claudicationJaundice  <response>: Idiopathic retroperitoneal fibrosis also called Ormonds disease is nonspecific inflammation of fibrofatty tissue in the retroperitoneum. It results in extensive collagen deposition surrounding the ureters, mostly at the level of the pelvic brim or below- Most patients present with ureteric obstruction, often with renal failure Reference : page 1007 Bailey and Loves sho practice of surgery 25th edition 