Right Coronary Artery Agenesis Diagnosed by Coronary CT Angiography: Case Report
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Published in Vol. 1 No. 1 (2026) of Loja Medical Journal.
About the JournalAbstract
Agenesis of the coronary arteries is a rare anomaly, with an incidence ranging from 0.024% to 0.066% in the population. We present the case of a 49-year-old female patient with typical chest pain on moderate exertion for one year and moderate functional limitation (NYHA III), with an abnormal exercise stress test and subsequent referral for coronary computed tomography angiography. This revealed absence of the right coronary artery. The left coronary artery and its two branches showed a normal course and left dominance, predominantly through the circumflex artery, with increased collateral circulation to the right ventricle. The left coronary artery showed no significant lesions; therefore, symptomatic medical treatment was initiated. The patient showed clinical improvement after medical treatment and cardiovascular rehabilitation.
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