Contrast-enhanced CT of the upper chest in a 45-year-old man reveals a large heterogeneous anterior mediastinal mass (asterisk) with internal fatty density suggesting thymolipoma. A normal lymph node with a fatty hilum (arrow) is seen in the right axilla. Another normal sized lymph node (oval arrow) is seen in the right lower paratracheal region. The small circular soft tissue density seen in the right pre-vertebral region (diamond arrow) is azygous vein.