Papillary fibroelastoma of the left atrial free wall.

A 63-year-old woman was referred for echocardiography in search of a potential cardiac source of systemic embolism. She had experienced 2 transient ischemic attacks during the previous 2 years. Transthoracic echocardiography (Figure 1) revealed a 2.5×2-cm mass attached to the left atrial lateral wall. Transesophageal examination (Figure 2) showed a 27×25×22-mm mobile, spherical tumor with 1- to 5-mm mobile projections. A peduncular attachment to the left …