الفهرس 
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Abstract
CAE is defined as localized or diffuse non-obstructive lesion of the epicardial coronary arteries with a luminal dilation exceeding 1.5 folds the diameter of normal adjacent segment (Senen et al., 2004)..
Coronary angiography is the gold standard for diagnosis of CAE.
The study included 100 patients were divided according to the results of the coronary angiographic findings into two groups:
Group I : included patients with coronary artery ectasia (n=50)
Group II : included patients with coronary artery stenosis (n=50).
The first section compared the demographic characteristics of the studied population which included age ,gender, diabetes mellitus, hypertension, smoking and dyslipidemia. According to statistical analysis, smoking and dyslipidemia were more frequent in group I.
The second section of comparison is concerning the echocardiographic finding which included EF, WMSI, LVEDD, LVESD, and ARD. There were no statistical differences between the two examined groups.
The third section of comparison is concerning the laboratory findings which included Hemoglobin, Creatinine and INR. There were no statistical differences between the two groups.
The fourth section of comparison is concerning the coronary angiographic finding which revealed that RCA was the most commonly affected vessel followed by LAD then LCX and lastly the LM coronary artery .