Fig. 3

The resected specimen. A The resected specimen contained the perforated site (arrowhead). B The area marked with the red line was covered by HP in the submucosa. The surgical margin was positive for HP. C The microscopic view of the specimen indicated that the perforated mucosa was not covered by HP (hematoxylin and eosin ×50). D Additionally, it revealed the presence of normal, well-recognized pancreatic tissue, including islets of Langerhans, in the surrounding areas (hematoxylin and eosin ×100)