Angiosarcoma of the heart.
D000293:Adolescent; D006325:Heart Atria / Q000473:pathology; D006338:Heart Neoplasms / Q000473:pathology*; D006394:Hemangiosarcoma / Q000473:pathology*; D006801:Humans; D008168:Lung / Q000473:pathology; D008297:Male; D009362:Neoplasm Metastasis; D010490:Pericardial Effusion / Q000150:complications; D010496:Pericardium / Q000473:pathology