[Inflammatory aneurysm of the infrarenal aorta].

Abdominal aneurysms with extensive periarortic fibrosis should be considered a variant of idiopathic retroperitoneal fibrosis. Rupture of these inflammatory aortic aneurysms seems to be less frequent than in arteriosclerotic aneurysms. Due to this experience preoperative corticosteroid treatment may be allowed, which appeared effective in patients with retroperitoneal fibrosis. 5 cases of inflammatory aneurysms are presented.