Organized granulation tissue mimicking left atrial myxoma recurrence.

A 64-year-old woman presented to clinic with 2 months of episodic chest tightness at rest, which would last several minutes before spontaneous resolution. Her pertinent medical history included tobacco abuse, hypertension, and hypothyroidism. In addition, she had resection of a left atrial myxoma in the year 2000, after she presented with similar chest discomfort. That procedure involved resection and a patch repair of a wide-based myxoma with negative margins from the interatrial septum. Her cardiac catheterization before resection had revealed minimal coronary artery disease. Computed tomographic angiography revealed no significant epicardial coronary artery disease, but noted a pedunculated mass attached to the interatrial septum (Figure 1). Transesophageal echocardiography revealed that this was an isolated, highly mobile mass arising from the atrial septum with a long stalk and a head characteristic of myxoma (Figure