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Figure 1: The pathological findings of the fine needle aspiration cytology (FNAC) from the mass. (a): Hematoxylin and eosin staining; (b): Nuclear positivity in TTF - 1 and increased proliferative index in Ki - 67; (c): Cytoplasmic staining with CD 56; (d): granular positivity with pan-cytokeratin

Figure 1: The pathological findings of the fine needle aspiration cytology (FNAC) from the mass. (a): Hematoxylin and eosin staining; (b): Nuclear positivity in TTF - 1 and increased proliferative index in Ki - 67; (c): Cytoplasmic staining with CD 56; (d): granular positivity with pan-cytokeratin