Introduction:
Coronary artery ectasia (CAE) and coronary artery aneurysm (CAA) are
defined as localized or diffuse dilatation of at least 1.5 times the
neighboring normal segments of the coronary artery1.
CAE is defined as dilatation of more than one-third of the length of a
coronary artery. In contrast, CAA is defined as dilatation of less than
one-third of the length of a coronary artery. The prevalence of CAE is
reported to be between 0.3% and 5.3% in patients receiving coronary
angiography; similarly, the prevalence of CAA is reported to be between
1.5% and 4.9% in patients undergoing coronary angiography, considering
these a rare finding1. Due to a lack of large-scale
and long-term outcome studies, current guidelines do not contain
explicit provisions for treating individuals with STEMI accompanied by
an ectatic infarct-related artery (IRA)2. In adults,
atherosclerosis accounts for almost half of the cases. Post-mortem
studies show the presence of atherosclerotic plaque in aneurysmal
segments of the affected coronary arteries, corroborating this
theory1,2. We report a unique case with a massive CAA.