Mediastinal mass (macroscopic evaluation): A. The line seen in the middle of the mass is from the cutting edge of the saw. B. The biggest piece of the five pieces was 13 × 10 × 4,5 cm, and the smallest was 3 × 3 × 2 cm. In pictures, only the biggest part can be seen because of its superior portion, 3 cm in diameter, could not be resected due to the invasions of innominate vein and VCS.