Figure 3
Histological findings. A, B: The center of the adenocarcinoma is mainly composed of bronchioloalveolar, solid and acinar pattern. C, D: Adenocarcinoma invasion was observed in the pulmonary artery wall. Thrombus formation was seen in the blood vessel (C, Hematoxylin and eosin staining; D, Elastica-van Gieson staining). E, F: Adenocarcinoma mainly composed of acinar pattern invaded the tunica intima of the pulmonary artery. The endothelium of the same region had been replaced by adenocarcinoma cells.