Left ventricular aneurysm secondary to Behcet's disease. A 16-year-old boy with Behcet's disease who was seen with thrombophlebitis of the leg was found to have coronary artery occlusion with postinfarction left ventricular aneurysm. Recurrent femoral artery aneurysms and orogenital ulceration developed in him. The diagnostic features together with successful treatment of this patient and a discussion of Behcet's syndrome are presented. 