Partial left pericardial defect with herniation of the left atrial appendage.
D000293:Adolescent; D000790:Angiocardiography; D006328:Cardiac Catheterization; D006325:Heart Atria; D006331:Heart Diseases / Q000150:complications* / Q000175:diagnosis / Q000000981:diagnostic imaging / Q000601:surgery; D006547:Hernia / Q000150:complications*; D059685:Herniorrhaphy; D006801:Humans; D008297:Male; D010496:Pericardium / Q000002:abnormalities* / Q000601:surgery; D011031:Pneumothorax, Artificial