Primary squamous cell carcinoma of the descending colon with pancreatic metastasis: A case report

Figure 2 Pathology findings. A: Colon (20 × hematoxylin and eosin staining): Atypical cells arranged in nests and sheets with focal keratinization (indicated by yellow circles); B: Pancreas (20 × hematoxylin and eosin staining): Atypical cells arranged in nests and sheets with focal keratinization (indicated by yellow circles); C: 100 × Immunohistochemistry (IHC): Ki67 (+); D: 100 × IHC: P40 (+); E: 100 × IHC: Cytokeratin (CK) 5/6 (+); F: 100 × IHC: P63 (+); G: 100 × IHC: CK20 (-); H: 100 × IHC: Caudal-type homeobox protein 2 (-); I: 100 × IHC: Villin (-); J: 100 × IHC: CK7 (+); K: 100 × IHC: Pan-CK (+); L: 100 × IHC: Somatostatin receptor 2 (-).