Fig. 2From: Management of a rare isolated left main coronary artery ostial stenosis in a young patient: a case reportPre-operative coronary computed tomography angiogram. A Short segment (3 mm) high-grade filiform ostial stenosis of the left coronary artery, with post-stenotic dilation of the left main (yellow arrow). B Dominant right coronary artery with outgoing collateral vessel supplying the left anterior descending (yellow star)Back to article page