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Figure 2: (a) The cut surface of left lower lobe showing grey-white miliary lesions; the largest lesion was 0.5 cm in diameter (arrow). The miliary lesions (H and E, ×400) showed: (b) Lepidic pattern, (c) papillary pattern with characteristic fibrovascular cores, (d) micro-papillary pattern showing tufts of cells within alveoli; (e) positive immunohistochemical demonstration of epidermal growth factor receptor (×400); (f) deeply yellow adenoma in the right adrenal gland; (g) papillary adenocarcinoma within the adenoma (H and E, ×250); (h) a displaced foamy cell (arrow) within the metastasis (H and E, ×400)

Figure 2: (a) The cut surface of left lower lobe showing grey-white miliary lesions; the largest lesion was 0.5 cm in diameter (arrow). The miliary lesions (H and E, ×400) showed: (b) Lepidic pattern, (c) papillary pattern with characteristic fibrovascular cores, (d) micro-papillary pattern showing tufts of cells within alveoli; (e) positive immunohistochemical demonstration of epidermal growth factor receptor (×400); (f) deeply yellow adenoma in the right adrenal gland; (g) papillary adenocarcinoma within the adenoma (H and E, ×250); (h) a displaced foamy cell (arrow) within the metastasis (H and E, ×400)