High-grade pancreatic intraepithelial neoplasia occurring in heterotopic pancreas of the gastric antrum: A case report

This case illustrates that PanIN-3 can occur even in small HP lesions without obvious malignant imaging features. Therefore, for patients with significant symptoms or uncertain diagnoses, endoscopic submucosal dissection may be considered as a personalized diagnostic and therapeutic intervention to effectively mitigate potential complications and the risk of progression to pancreatic ductal adenocarcinoma .