Fig. 6
From: First case of lung cancer with pneumoconiosis and endobronchial leiomyoma complicating the diagnosis
Macroscopic and histological examination findings of the resected specimen. A Macroscopically, a 4.3 × 4.3 × 3.5 cm tumor with central necrosis was observed in the upper lobe of the right lung. Histologically, the specimen showed a squamous cell carcinoma with evidence of cytoplasmic keratin pearls and invasive growth; B H&E staining, scale bar: 2 µm; C H&E staining, scale bar: 200 µm