Right ventricle-dependent coronary circulation coexisting with left main coronary atresia in the setting of pulmonary atresia-intact ventricular septum is rare. In the case described, the left coronary artery (LCA) origin from the aorta could not be found on conventional angiography or cardiac magnetic resonance imaging. During surgery, multiple LCA branches originating from the finger-like continuum of the primitive right ventricular sinusoidal network were observed.
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