Pseudo tumor mitral valve prolapse sign.
D003937:Diagnosis, Differential; D004452:Echocardiography; D006325:Heart Atria; D006338:Heart Neoplasms / Q000175:diagnosis*; D006801:Humans; D008945:Mitral Valve Prolapse / Q000175:diagnosis*; D009232:Myxoma / Q000175:diagnosis*