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Case Report
©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 3
Figure 3 The transitional zone between the two tumor components. Hematoxylin and eosin staining revealed a gradual morphological transition from nests of squamous cell carcinoma to sheets of small cell carcinoma. A corresponding change was observed in the immunohistochemical staining patterns of synaptophysin and chromogranin A across this region. Scale bars are 600 μm. At 20 × magnification. HE: Hematoxylin and eosin; Syn: Synaptophysin; CgA: Chromogranin A.


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