Right atrial aneurysm in adults--report of three cases and review of literature.

Right atrial aneurysm (RAA) or RA diverticula are described as saccular structures originating from the RA free wall. This must be differentiated from aneurysmal dilation of the entire right atrium. We diagnosed three cases of RAA since 2000. The first patient presented with effort intolerance, the second with recurrent palpitations, and the third was totally asymptomatic. In all the cases transthoracic echocardiography was definitive with little additional information obtained from catheterization. We report our experience and review the literature pertaining to adult presentation of this interesting pathology, of which only 20 cases have thus far been reported.