This tumor is found most often in the right atrium and frequently extends to the pericardium, vena cava, or tricuspid valve, causing tamponade and/or heart inflow obstruction.

• 此肿瘤最常发生在右心房内，常会侵延至心包膜，静脉腔、或三尖瓣，而引至心包填塞或心内血流阻碍。