title: Ectopic gastric mucosa and pancreatic ducts in the rectum.
abstract: A 68-year-old woman with fecal occult blood was referred to Dokkyo Medical School Hospital. Colonoscopy demonstrated a flat lesion in the rectum, and endoscopic mucosal resection of the lesion was performed. Histologic examination revealed that it contained ectopic gastric mucosa, which had a gastric foveolar and glandular mucinous phenotype, as demonstrated by immunohistochemistry. Moreover, the lesion also contained CA19-9- and CK7-positive pancreatic duct-like components in the submucosal layer. The present case is the first report to describe ectopic gastric mucosa and pancreatic ducts concurrently arising in the rectum.
authors.affiliation: Department of Surgical and Molecular Pathology, Dokkyo University School of Medicine, Japan.
authors.forename: Hidetsugu
authors.initials: H
authors.lastname: Yamagishi
authors.forename: Hirokazu
authors.initials: H
authors.lastname: Fukui
authors.forename: Shigeki
authors.initials: S
authors.lastname: Tomita
authors.forename: Kazuhito
authors.initials: K
authors.lastname: Ichikawa
authors.forename: Johji
authors.initials: J
authors.lastname: Imura
authors.forename: Mitsuru
authors.initials: M
authors.lastname: Ishizuka
authors.forename: Keiichi
authors.initials: K
authors.lastname: Kubota
authors.forename: Takahiro
authors.initials: T
authors.lastname: Fujimori
mesh_terms: D000368:Aged; D018395:CA-19-9 Antigen / Q000378:metabolism; D002828:Choristoma / Q000378:metabolism / Q000473:pathology*; D005260:Female; D005753:Gastric Mucosa; D006801:Humans; D007150:Immunohistochemistry; D053552:Keratin-7 / Q000378:metabolism; D010183:Pancreatic Ducts; D012002:Rectal Diseases / Q000378:metabolism / Q000473:pathology*
chemical_list: D018395:CA-19-9 Antigen; D053552:Keratin-7