Embryonal botryoid rhabdomyosarcoma of the mitral valve.
D002648:Child; D004452:Echocardiography; D006338:Heart Neoplasms / Q000175:diagnosis* / Q000453:epidemiology; D006801:Humans; D008297:Male; D008943:Mitral Valve; D012208:Rhabdomyosarcoma / Q000175:diagnosis* / Q000453:epidemiology