Fig. 1

Chest computed tomography showing a tumor expanding over the remaining two lobes (a), compressing the pulmonary artery at the cut end of the superior trunk (b, arrowhead), adjoining to the azygos vein stump branching from the superior vena cava (b), and adhering to the membranous side of the right main bronchus (d). Compared with preoperative chest X-P (e), radiolucency was declining in the right upper lung field after pneumonia (f)