XXXX involving pancreaticobiliary maljunction and an aberrant pancreatic duct draining into the stomach: A case report and review of the literature.

@entity1 @entity1377 @entity4929 @entity1087 @entity5 @entity600 @entity3558
UNASSIGNED: @entity4929 ( @entity4929 ) are characterized by the growth of epithelial components with @entity3558 production in the main pancreatic duct, or a large branch. We report a case of @entity1377 ( @entity1377 ) of the pancreatic head, complicated by pancreaticobiliary maljunction (PBM) and an aberrant pancreatic duct draining into the stomach. A 50-year-old @entity1 with malaise and @entity1087 was found to have a mass in the pancreatic head at a local hospital. He was clinically diagnosed with @entity1377 with invasion to the stomach and duodenum after extensive endoscopic and radiological evaluation and a pancreaticoduodenectomy was performed. Histologically, most of the lesion exhibited proliferation of atypical glands, with irregular papillary and villoglandular structures lined by mucinous columnar epithelium, which extended intraepithelially along the dilated pancreatic duct wall. @entity5 cells spread into the duodenal wall formed mucous nodules. The pancreatic ducts of this lesion uniquely showed two @entity600 ; PBM, and an aberrant pancreatic duct opening to the gastric wall. This case was rare in the sense that @entity1377 extended into such unique structures. We report a case of @entity1377 with rare localization. The pathogenesis of this type of @entity5 in an abnormal pancreatic duct will be discussed.
