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Case Report
©The Author(s) 2026.
World J Gastrointest Surg. Jan 27, 2026; 18(1): 112416
Published online Jan 27, 2026. doi: 10.4240/wjgs.v18.i1.112416
Figure 4
Figure 4 Pathological examination of the stenosis locating at the upper section of the common bile duct. A: Hematoxylin and eosin showed clusters of heterogeneous cells beneath the mucosal layer, suggesting poorly differentiated adenocarcinoma; B: Immunohistochemical staining showed cytokeratin (+). Yellow circle: Poorly differentiated adenocarcinoma cells.


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