Angiosarcoma of the heart.
D000368:Aged; D003937:Diagnosis, Differential; D006338:Heart Neoplasms / Q000473:pathology*; D006394:Hemangiosarcoma / Q000473:pathology*; D006801:Humans; D008297:Male; D008654:Mesothelioma / Q000473:pathology; D008854:Microscopy, Electron