title: Primary angiosarcoma of the heart mimicking a left atrial myxoma.
mesh_terms: D003937:Diagnosis, Differential; D004452:Echocardiography; D006325:Heart Atria; D006338:Heart Neoplasms / Q000175:diagnosis*; D006394:Hemangiosarcoma / Q000175:diagnosis*; D006801:Humans; D008297:Male; D008875:Middle Aged; D009232:Myxoma / Q000175:diagnosis*