title: A case of Helicobacter pylori-negative depressed type gastric adenoma.
abstract: A 75-year-old woman was referred to our hospital for further examination of gastric antral abnormal endoscopic findings. Endoscopic study of the stomach revealed a depressed lesion in the gastric antrum. Atrophic findings were not recognized in the background gastric mucosa, and Helicobacter pylori infection was not detected by histology, an urea breath test, a rapid urease test and serological test. A diagnosis of adenoma was given histopathologically from the resected specimens. As a result of immunohistological study, the phenotype of the tumor was not classified as either gastric type or intestinal type. CDX2 was positive in part of the tumor.
authors.affiliation: Gastro Endoscopy Center, JA Onomichi General Hospital.
authors.forename: Ryo
authors.initials: R
authors.lastname: Yuge
authors.forename: Akira
authors.initials: A
authors.lastname: Fukumoto
authors.forename: Shintaro
authors.initials: S
authors.lastname: Sagami
authors.forename: Tomohiro
authors.initials: T
authors.lastname: Iiboshi
authors.forename: Seiji
authors.initials: S
authors.lastname: Onogawa
authors.forename: Naomichi
authors.initials: N
authors.lastname: Hirano
authors.forename: Hajime
authors.initials: H
authors.lastname: Amano
authors.forename: Keiji
authors.initials: K
authors.lastname: Hanada
authors.forename: Fumiaki
authors.initials: F
authors.lastname: Hino
authors.forename: Makoto
authors.initials: M
authors.lastname: Obayashi
authors.forename: Shuji
authors.initials: S
authors.lastname: Yonehara
mesh_terms: D000236:Adenoma / Q000473:pathology*; D000368:Aged; D005260:Female; D016480:Helicobacter pylori / Q000302:isolation & purification; D006801:Humans; D011706:Pyloric Antrum / Q000473:pathology; D013274:Stomach Neoplasms / Q000382:microbiology / Q000473:pathology*