Cardiac lymphangioma and lipoma: Report of a case of simultaneous occurrence in association with lipomatous infiltration of the myocardium and cardiac arrhythmia

Abstract

Multiple supraventricular arrhythmias in a 43-year-old man are attributed to the interruption and replacement of the specialized muscle of the conduction system. The morphologic appearance of the vascular channels and their failure to fill in the coronary arteriogram indicate that the channels are of a lymphatic origin and that the growth is one of a diffuse lymphangiomatous process associated with a lipomatous replacement of atrial cardiac muscle which in one area formed a discrete tumor, a lipoma.