Adult cardiac cystic lymphangiectasia of the right atrium.

Cardiac lympangiectasia is a rare pathological dilation of the lymphatic channels of the heart. Diagnosis is made by pathology; however, there remains no definitive diagnostic study. There are reports of cardiac cystic lymphangiectasias in children. A case of right atrial lymphangiectasia, initially identified by echocardiography, is presented here. This is the first report of such a mass.