Autopsy findings of fetal, left lung agenesis complicated with cardiac malposition. The anterior chest wall, the thymus, and the pericardium were removed to demonstrate the shape and location of the heart. The posterior chest wall in the left side was also removed to confirm any anomalies behind the heart. The fetal heart occupied almost the whole hemithorax at the left side with the cardiac apex rotated toward the left and posterior. The right lung was normal and the left lung not seen. AAO, ascending aorta; PA, pulmonary artery; RA, right atrium; SVC, superior vena cava; T, trachea.