Anomalous origin of left main coronary artery from pulmonary artery: Patient characteristics and imaging associations on multidetector computed tomography angiography.

Degree of collateralization could be the key factor determining the time of presentation, clinical symptoms, and LV function, thus influencing clinical outcomes. Patients with infantile ALCAPA present with features of heart failure and have dilated and dysfunctional LV consequent to lack of collaterals, unlike adult-type ALCAPA.