Coronary artery ectasia is an uncommon angiographic finding with an incidence of 2.3%, most often occurring in association with obstructive CAD, and outcomes appear to differ according to the presence of coexisting obstructive disease, with fewer events observed among patients with isolated CAE.
The incidence of coronary artery ectasia (CAE) among patients undergoing coronary angiography was 2.3% over a 10-year period.
The vast majority of CAE patients were male, with a mean age in the late fifties.
The right coronary artery (RCA) was the most commonly involved vessel in CAE.
The majority of CAE patients had concurrent atherosclerotic cardiovascular disease (ASCVD) rather than isolated CAE.
Patients with mixed CAE and ASCVD had significantly worse composite clinical outcomes compared to those with isolated CAE.
This research suggests that coronary artery ectasia (CAE) — a condition where the coronary arteries become abnormally widened or dilated — is relatively uncommon, appearing in about 1 in 43 patients who underwent coronary angiography (heart artery imaging) at a Saudi Arabian hospital over 10 years. Among the 242 patients diagnosed with CAE, the condition was found predominantly in older males, and the right coronary artery was the most frequently affected vessel. The most common pattern of dilation was diffuse (spread throughout the artery) rather than localized bulges. This research also suggests that most CAE patients (about 73%) had the condition alongside significant blockages in their coronary arteries (atherosclerotic cardiovascular disease), while only about 27% had CAE without concurrent blockages. Patients in the combined group were more likely to have diabetes and be smokers. Importantly, over a follow-up period averaging about 17 months, patients with both CAE and artery blockages experienced nearly twice the rate of adverse clinical events compared to those with CAE alone (29% vs. 14%). These findings matter because they highlight that the prognosis for CAE patients depends heavily on whether artery-blocking disease is also present. This research suggests that identifying and managing risk factors like diabetes and smoking may be particularly important in patients with both conditions, and that isolated CAE may carry a more favorable short-to-medium term outlook than CAE combined with obstructive coronary disease.
Aljabbary T, Alhamed M, Ismaeel M, Alhaqbani A, Alhumimidi A, Alanazi N, et al.. (2026). Coronary Artery Ectasia: A 10-Year Experience at a Single Center in Saudi Arabia.. Saudi medical journal. https://doi.org/10.15537/1658-3175.8793