Bilateral axillary arterial aneurysms in siblings with Marfan syndrome.

Axillary arterial aneurysm associated with Marfan syndrome is an extremely rare and dangerous disease because of its potential risk for rupture and impairment of neurologic function in the upper extremities. Treatment of large axillary aneurysms can be surgically challenging because the axillary artery is anatomically located under the clavicle bones and the brachial plexus runs dorsal to the aneurysm. We report 2 cases of bilateral axillary arterial aneurysms in brothers with Marfan syndrome. Revival of a novel approach and cautious attempts during the procedures are described in both cases.