Inflammatory Abdominal Aortic Aneurysms

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Abstract
About 10% of all abdominal aortic aneurysms are characterized by an exuberant inflammatory reaction consisting of a dense white sheath over the aneurysm with peri-aortic fibrosis. The aetiology is unknown. There are characteristic ultrasonic and CT appearances but the condition is usually diagnosed at laparotomy. Surgery is the best treatment, keeping peri-aortic dissection to a minimum. Steroid therapy may occasionally be indicated where the situation is considered inoperable or when the patient declines surgery. If hydronephrosis is present because of ureteric involvement, surgical ureterolysis, as for retroperitoneal fibrosis, should be considered.