Thymic carcinoma presenting as an intraluminal growth into the great vessels and the cardiac cavity.

A rare case of thymic carcinoma with an intraluminal growth to the left brachiocephalic vein, the superior vena cava and the right atrium is described. Venogram and cardiac echogram were useful for evaluating the vascular permeation of the tumor. The patient underwent successful enbloc excision of the tumor under conditions of cardiopulmonary bypass.