EVAR: Endovascular aneurysm repair. A procedure to repair an aneurysm of the aorta. In EVAR a stent is placed in the aneurysmal area of the aorta. The procedure is similar to the placement of a stent in a coronary artery after angioplasty. An aortic aneurysm is a ballooning or widening of the aorta, the largest artery in the body. The aneurysm weak... Found on http://www.medterms.com/script/main/art.asp?articlekey=38676