Anomalies of Left Internal Mammarian Arteries

Left internal ınammarian artcry (IMA), is frequcntly used in coronary artery bypass graft surgery Anomalies of this artery are important in the technique and results of the surgery. We performed angiograms to S2 left IMA and found anomalies in 11 of them (% 21). Four of these were related to a common origin (% 7.8), 3 consisted of tortuosity (% S.8). Large side branches existed in 2 arteries (% 3.8), atypical course in 1 (% 1.9) and distal anastomosis with right IMA was noted in one (% 1.9). There were no complications during angiography. Because anomalies of left IMA are relatively common, left IMA angiography, an easy and safe method to perform, needs to be done for all candidates of coronary artery bypass surgery.