A rare case of left main coronary artery atresia misdiagnosed as an anomalous left coronary artery from the pulmonary artery and presented as dilated cardiomyopathy

Left main coronary artery atresia is one of the rarest congenital anomalies characterized by the absence of the left coronary ostium and the left main trunk. This case report presents an extremely rare left main coronary artery atresia case in a 14-week-old female infant presenting with severe symptoms of dilated cardiomyopathy. The patient underwent surgery after successful weaning from extracorporeal membrane oxygenation (ECMO) support but died because of cranial complications after the second run of ECMO.