Figure 2.

Representative case of non‐air bronchogram. (a,b) A thin‐section computed tomography scan demonstrates a solid tumor without an air component. (c–g) Histological examination of the resected tumor shows that this tumor is composed of (c) 50% papillary adenocarcinoma, and 50% (d) spindle and (e) giant cell components. (f) Necrosis of the tumor tissue is observed (asterisk). (g) Intralesional bronchi are destroyed by the invasion of the tumor, and a fragment of bronchial cartilage is buried in the tumor tissue (arrow). (c–g) Hematoxylin and eosin stain. Original magnification: (c–e) ×200, (f) ×100, (g) ×40.