The role of myocardial contrast echocardiography to assess the origin of a mass in right cardiac cavities.

We report the case of a patient with hepatocellular carcinoma who was admitted to our hospital with fatigue and edema of lower extremities. Transthoracic echocardiographic examination revealed a mobile echogenic cavoatrial mass that infiltrated the inferior vena cava and extended along the vessel protruding into the right cardiac cavities. The differential diagnosis included a tumor mass originating from the liver and subsequently infiltrating the inferior vena cava and extending into the right cardiac cavities or a large thrombus formed on the tumor mass that infiltrated the inferior vena cava.