Pulmonary subvalvular tumor.
D000293:Adolescent; D003560:Cysts / Q000150:complications* / Q000601:surgery; D004562:Electrocardiography; D006338:Heart Neoplasms / Q000150:complications* / Q000601:surgery; D006801:Humans; D008297:Male; D010701:Phonocardiography; D011666:Pulmonary Valve Stenosis / Q000000981:diagnostic imaging / Q000209:etiology*; D011859:Radiography