Angiographic evolution of coronary artery morphology in XXXX .

@entity1 @entity135 @entity301 @entity5749 @entity1459 @entity850
As previously reported in acute presentations of @entity1459 , an identifiable characteristic coronary artery lesion has been found in about 70% of cases at coronary arteriography. This takes the form of an eccentrically placed @entity850 with a @entity135 due to one or more overhanging edges or irregular, scalloped borders, or both. To study the evolution of lesions responsible for @entity1459 , coronary artery anatomy and morphology on angiography were evaluated in @entity1 with @entity5749 progressing to @entity1459 . Group I comprised 25 @entity1 with a history of @entity5749 who were restudied after an acute episode of @entity1459 and Group II comprised 21 @entity1 with little or no change in symptoms between catheterizations. Progression of @entity301 occurred in 19 (76%) of 25 @entity1 in Group I compared with 7 (33%) of 21 in Group II (p less than 0.001). Of the 25 lesions with progression in Group I, 17 progressed to less than 100% and 8 to 100% occlusion. Eighteen of these 25 lesions in Group I were previously insignificant (less than 50% occlusion on the first catheterization). In contrast, of the eight lesions with disease progression in Group II, only two were previously insignificant while six showed at least 50% occlusion on the initial study. The eccentric lesion was seen in 71% of all lesions with progression to less than 100% occlusion in Group I, but it was not seen in any Group II vessel with progression.(ABSTRACT TRUNCATED AT 250 WORDS)
