Perianeurysmal retroperitoneal fibrosis

Last revised by Daniel J Bell on 1 Mar 2024

Perianeurysmal retroperitoneal fibrosis is a subtype of a spectrum of retroperitoneal fibrosis. It is characterised by association with an inflammatory aneurysm, adventitial and periadventitial inflammation, medial thinning and chronic retroperitoneal inflammatory process which is associated with a varying degree of fibrotic reactions surrounding the abdominal aorta.

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