Limited dissection of abdominal aortic aneurysm in a patient with multiple myeloma

Dissection limited to the abdominal aorta contributes 4% of all aortic dissections, and inflammatory injury of the aortic media is one of factors associated with dissection. In multiple myeloma, leukocytoclastic vasculitis of the skin has been known. We describe limited dissection of an abdominal aortic aneurysm with dense lymphocyte infiltration in a 62-year-old man with multiple myeloma. Although it is unclear whether the lymphocyte infiltration in the aortic wall, which was denser than that-of atherosclerotic aneurysm, was associated with multiple myeloma, the excessive aortic wall inflammation may have somewhat influenced aneurysm formation or aortic dissection.