Figure 1

Radiological findings. A: Chest X-ray showed a mass shadow in the right middle lung field. B, C: Chest CT showed a tumor with an irregular border centered in the hilar region extending from S6 to the middle lobe of the right lung. Stenosis and occlusion of the pulmonary artery were found on mediastinal window setting. D: Positron emission tomography showed fluorodeoxyglucose uptake in the tumor. E: Angiography showed complete occlusion of the pulmonary trunk at the periphery proximal to the bifurcation of the posterior ascending branch, and a filling defect at the root of this branch.