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[A patient with a wide aorta and 2 wide kidney pelves: retroperitoneal fibrosis].

The case is discussed of a patient with renal insufficiency due to severe stenosis of both ureters brought about by a periaortic inflammatory process. Such periaortitis is seen in severe atherosclerosis; the condition allegedly occurs in 5 to 23% of all patients with an abdominal aortic aneurysm. The literature on this form of retroperitoneal fibrosis is reviewed.