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We describe a dorsalis pedis artery true aneurysm due to atherosclerosis. A 61-year-old woman had a pulsatile and painful tumor on the right dorsal part of the foot, and magnetic resonance imaging revealed an aneurysm of the dorsalis pedis artery. Resection of the aneurysm was completed without complications. Pathologic analysis showed true aneurysm due to atherosclerosis. We review the literature on true aneurysm of the infrapopliteal arteries, including the dorsalis pedis artery, and discuss the clinical presentation and surgical management.

Proximal ulnar artery aneurysms, including pseudoaneurysms, have not been described in the English literature. We report a nontraumatic pseudoaneurysm of the proximal ulnar artery with eosinophilia in a 54-year-old man. Radial, coronary, and hepatic artery aneurysms associated with eosinophilia in idiopathic hypereosinophilic syndrome or allergic granulomatous angiitis (Churg Strauss syndrome) have been reported. Although it is unclear in the present case whether eosinophilia was associated with the pseudoaneurysm of the ulnar artery, eosinophil infiltration into the aneurysmal wall may have influenced vascular injury as the cause of the pseudoaneurysm formation.