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World Journal of Clinical Oncology
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2218-4333
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Baishideng Publishing Group Inc, 7041 Koll Center Parkway, Suite 160, Pleasanton, CA 94566, USA

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©The Author(s) 2025.
World J Clin Oncol. Dec 24, 2025; 16(12): 111701
Published online Dec 24, 2025. doi: 10.5306/wjco.v16.i12.111701
Figure 2
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Figure 2 Immunochemical analysis revealed two distinct tumour components: Squamous cell carcinoma and small cell carcinoma. The squamous cell carcinoma component demonstrated positive staining for cluster of differentiation (CD) 5, CD117, cytokeratin and p40, with a Ki-67 proliferation index of 30%. The small cell carcinoma component showed positivity for CD117, cytokeratin, synaptophysin and chromogranin A, exhibiting a higher Ki-67 proliferation index of 60%. Scale bars are 60 μm. At 200 × magnification. SCC: Squamous cell carcinoma; SmCC: Small cell carcinoma; CD: Cluster of differentiation; TdT: Deoxynucleotidyl transferase; CK: Cytokeratin; Syn: Synaptophysin; CgA: Chromogranin A.
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