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Figure 2: Postoperative histology revealed a metastatic squamous cell carcinoma, consistent with nasopharyngeal carcinoma (NPC) due to confirmation by immunohistochemistry (a) hematoxylin and eosin staining, ×200; (b) strong immunohistochemistry staining of P63 in tumor cell cytoplasm, ×400; and (c) positive pancytokeratin (PCK) in tumor cell nuclei, ×400)

Figure 2: Postoperative histology revealed a metastatic squamous cell carcinoma, consistent with nasopharyngeal carcinoma (NPC) due to confirmation by immunohistochemistry (a) hematoxylin and eosin staining, ×200; (b) strong immunohistochemistry staining of P63 in tumor cell cytoplasm, ×400; and (c) positive pancytokeratin (PCK) in tumor cell nuclei, ×400)