Fig. 4
61-year-old female with invasive adenocarcinoma in the right upper lobe, STAS (+). Axial CT in the lung window (a) and axial chest thin-slice CT (d) show that the part-solid nodule is about 2.7 × 2.0 cm with lobulation, spiculation, pleural indentation and vessel convergence. Axial PET (b) and axial fused PET/CT (c) show the SUVmax of the lesion is 6.3 g/ml. In photomicrograph (hematoxylin-eosin stain, magnification × 400) (e), tumor tissues (black arrow) are observed in the alveolar spaces beyond the edge (dashed line) of the main tumor (triangle)