Background: Hypoplastic coronary artery disease is a rare congenital coronary artery
anomaly. It is often detected incidentally, and its true incidence in the general population is not
Discussion: Symptoms of HCAD are syncope, palpitations, dyspnea, and chest pain. Also, arrhythmia
and myocardial infarction can be seen; these can cause sudden death, especially in athletes
and young people. Diagnosis is often made at autopsy.
Conclusion: Here, we present the case of a 39-year-old male with isolated hypoplasia of the left
circumflex artery detected by coronary Computed Tomography (CT) angiography who complained