Adenocarcinoma originating from a colonic duplication cyst: A case report

Figure 3 Gross pathologic finding. A: A cystic tumor section encased in a serosal layer revealed an internal cavity filled with mucinous-like material. Histological and pathological findings; B: The cyst wall was lined with epithelium resembling the intestinal mucosa, with mucin occupying the lumen, and mild inflammatory cell infiltration was observed in the surrounding stroma.