title: Mediastinal tumor presenting as a new heart murmur: diagnosis and treatment.
mesh_terms: D000293:Adolescent; D000402:Airway Obstruction / Q000209:etiology; D003937:Diagnosis, Differential; D006326:Heart Auscultation; D006337:Heart Murmurs; D006801:Humans; D008297:Male; D008479:Mediastinal Neoplasms / Q000150:complications / Q000175:diagnosis* / Q000628:therapy; D013724:Teratoma / Q000175:diagnosis* / Q000628:therapy