Gastric carcinoma originating from the heterotopic submucosal gastric gland treated by laparoscopy and endoscopy cooperative surgery

Figure 2 Results of histopathological examinations. A: The resected specimen had negative lateral and vertical margins with normal mucosa; B: A pathological examination confirmed that the tumor was intrasubmucosal (the depth of invasion into the submucosal layer was 5000 μm), measured 20 mm × 11 mm × 6 mm, and was a well differentiated adenocarcinoma; C: Dilated gastric glands were found in the submucosal layer. There was no lymphovascular invasion; D: An immunostaining method showed MUC5AC (+) and MUC6 (+), indicating differentiation into the pyloric glands.