Confirmation of a retrosternal mass by echocardiogram.

Case report of a 14 year old girl with Hodgkin's disease whose echocardiographic findings showed an anterior mediastinal mass between the right ventricle and the chest wall. The echocardiogram permitted an accurate measurement of the AP diameter of the mass. This technique, in conjunction with chest x ray, provides a means of determining changes in overall mass size as an indication of response to therapy.