Appendiceal mucinous neoplasms: Optimizing treatment strategies based on clinical, histological, and molecular features

Figure 3 Immunohistochemical findings. A: Immunohistochemical staining for cytokeratin 20, showing diffuse positivity on the mucosal surface layer (× 40 magnification); B: Immunohistochemical staining of cytokeratin 7, showing partial positivity on the mucosal surface layer (× 40 magnification); C: Immunohistochemical staining for mucin 5AC, showing partial positivity on the mucosal surface layer (× 40 magnification).