IgG4-related inflammatory abdominal aortic aneurysm associated with autoimmune pancreatitis

An association between autoimmune pancreatitis (AIP) and inflammatory abdominal aortic aneurysm (AAA) has never been reported. Reported herein is a case of IgG4‐related inflammatory AAA accompanying metachronous AIP. A 77‐year‐old man presented with malaise and intermittent lower abdominal pain. Radiological examination showed inflammatory AAA and right hydronephrosis caused by retroperitoneal fibrosis. Surgical correction of the AAA was...