[An axillary-subclavian artery aneurysm in pre-rupture revealing Marfan syndrome].

Marfan syndrome is an autosomal dominant disorder of connective tissue which has many clinical symptoms and whose prognosis depends on associated cardiovascular complications, dominated by proximal aortic disorders. Peripheral arterial aneurysms are rare during Marfan syndrome and are exceptionally indicative of the disease. We report the case of a large aneurysm of the axillary-subclavian artery in pre-rupture revealing a new case of Marfan syndrome. Treatment consisted in surgical repair by resection of the aneurysm and performing a venous bypass graft; the postoperative course was uneventful.