1Seirei Mikatabara General Hospital Department of Cardiology, 2Seirei Mikatabara General Hospital Central Laboratory
Right atrial thrombus, Two-dimensional echocardiography
We report the case of a 84-year-old man with a thin-walled cystic mass in the right atrium. The cystic mass was clearly demonstrated by two-dimensional echocardiography. He died from miltiple organ failure. At autopsy, a whitish, rough-surfaced cystic mass was found attached to the right atrial wall between the superior vena cava and the right atrial appendage. Under microscopic examination, the wall of the cyst was revealed to be composed of platelets, fibrin and red blood cells. To our knowledge, this type of right atrial thrombus has not been previously reported.