Ahmad Mansoor, Mungee Sudhir
UIC
University of Illinois Peoria
Coronary artery ectasia (CAE) is a dilation of the coronary artery lumen. The term "ectasia" refers to diffuse dilation of a coronary artery, while focal coronary dilation is called a "coronary aneurysm." The definition of coronary artery ectasia is a dilatation exceeding more than one-third of the coronary artery length with the diameter of the dilated segment measuring more than 1.5 times the diameter of a normal adjacent segment. Coronary artery ectasia is well recognized, but uncommon findings are encountered during diagnostic coronary angiography (See Coronary Artery Ectasia, Angiograph). The classification of coronary artery ectasia is subdivided into 4 groups: Type 1: Diffuse ectasia of 2 or 3 vessels. Type 2: Diffuse ectasia in 1 vessel and localized disease in another vessel. Type 3: Diffuse ectasia in 1 vessel only Type 4: ocalized or segmental involvement .
冠状动脉扩张（CAE）是指冠状动脉管腔的扩张。“扩张”一词指冠状动脉的弥漫性扩张，而局限性冠状动脉扩张则称为“冠状动脉瘤”。冠状动脉扩张的定义是扩张超过冠状动脉长度的三分之一以上，扩张段直径超过相邻正常段直径的1.5倍。冠状动脉扩张已得到充分认识，但在诊断性冠状动脉造影期间会遇到不常见的表现（见冠状动脉扩张，血管造影）。冠状动脉扩张的分类可细分为4组：1型：2支或3支血管弥漫性扩张。2型：1支血管弥漫性扩张，另一支血管局限性病变。3型：仅1支血管弥漫性扩张。4型：局限性或节段性受累。
