Figure 2:

Representative three-dimensional images—pre- and postoperation. We constructed three-dimensional imaging using VINCENT (Ver. 4.0) software. Two thoracic surgeons and 1 radiologist constructed the extended thymectomy area as precisely as possible. The area was discussed thoroughly until all parties agreed. The grey area is the anterior mediastinal fat tissue, including the thymus, and the orange area is the tumour. VINCENT (Ver. 4.0) was used to calculate the volume of the grey area and the orange area (ml). There was the tendency that we had the residual fat tissue on the diaphragm side.