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. 2017 Feb 27;8(3):271–274. doi: 10.1111/1759-7714.12423

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© 2017 The Authors. Thoracic Cancer published by China Lung Oncology Group and John Wiley & Sons Australia, Ltd

This is an open access article under the terms of the Creative Commons Attribution‐NonCommercial License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited and is not used for commercial purposes.

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Macroscopic and microscopic view of the lung cancer. (a) A needle biopsy specimen before chemotherapy showed invasive keratinizing squamous cell carcinoma. Bar = 50 μm. (b) Resected specimen. The tumor had an irregular margin, approximately 1.4 × 1.0 cm, which mostly consisted of collapsed lung parenchyma with fibrosis and necrosis. The yellow granular appearance is a result of tumor necrosis (N). Arrowhead indicates a small focus of residual tumor. Bar = 1 cm. (c) Tumor necrosis with cholesterin clefts and ghost cells. Bar = 200 μm. (d) Residual squamous cell carcinoma with neutrophil inflammation. Bar = 50 μm.