An asymptomatic 78-year-old woman was incidentally found to have a mobile mass lesion in the left atrium. Transthoracic echocardiography demonstrated an extremely mobile hyperechoic mass measuring 1.7 mm in diameter, originating from the severely calcined posterior mitral annulus (Figure 1A). Three-dimensional transesophageal echocardiography also showed a mobile pedunculated mass originating from the posterior mitral annulus (Figure IB).
展开▼
