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Figure 3: (a) Biopsy slides from the lung lesion taken under computerized tomographic guidance: High-power view (×400) showing tumor cells in acinar pattern, infiltrating the lung parenchyma. Individual cells are round with granular basophilic cytoplasm and mild nuclear pleomorphism. No increase in mitosis or necrosis. (b) Cells showing periodic acid–Schiff positivity; diastase sensitive. (c) Immunohistochemistry with thyroid transcription factor-1 negative |
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