title: Characteristics of advanced gastric cancer undetected on gastroscopy.
abstract: OBJECTIVE
  Stomach cancer can be easily diagnosed via endoscopy, but also possible to be missed. The aim of this study was to investigate the clinical and endoscopic characteristics of advanced gastric cancers that were not diagnosed based on endoscopic examination.
  
  
  METHODS
  We evaluated patients who had newly diagnosed advanced gastric cancer that was undetected via endoscopy within the last six months.
  
  
  RESULTS
  Sixteen patients were included in this study. The locations of the cancers were the cardia in six cases, the greater curvature side of the body in eight cases and the antrum in two cases. The histological findings were tubular type adenocarcinoma in 11 cases, with ten cases of moderately to poorly differentiated adenocarcinoma and five cases of signet ring cell type adenocarcinoma.
  
  
  CONCLUSIONS
  Even advanced gastric cancer lesions may not be detected during endoscopy. If a patient continues to complain of upper gastrointestinal symptoms, even though endoscopy does not find abnormal findings, repeated endoscopy and/or additional diagnostic studies should be considered.
authors.affiliation: Department of Internal Medicine, Konkuk University Medical Center, Korea.
authors.forename: In Kyung
authors.initials: IK
authors.lastname: Sung
authors.forename: Young Choon
authors.initials: YC
authors.lastname: Kim
authors.forename: Jung Won
authors.initials: JW
authors.lastname: Yun
authors.forename: Hyun Il
authors.initials: HI
authors.lastname: Seo
authors.forename: Dong Il
authors.initials: DI
authors.lastname: Park
authors.forename: Yong Kyun
authors.initials: YK
authors.lastname: Cho
authors.forename: Hong Joo
authors.initials: HJ
authors.lastname: Kim
authors.forename: Jung Ho
authors.initials: JH
authors.lastname: Park
authors.forename: Chong Il
authors.initials: CI
authors.lastname: Sohn
authors.forename: Woo Kyu
authors.initials: WK
authors.lastname: Jeon
authors.forename: Byung Ik
authors.initials: BI
authors.lastname: Kim
authors.forename: Suk Joong
authors.initials: SJ
authors.lastname: Oh
authors.forename: Byung Ho
authors.initials: BH
authors.lastname: Son
authors.forename: Chang Hak
authors.initials: CH
authors.lastname: Yoo
authors.forename: Jin Hee
authors.initials: JH
authors.lastname: Sohn
authors.forename: Hwa Young
authors.initials: HY
authors.lastname: Lee
authors.forename: Kyung Hee
authors.initials: KH
authors.lastname: Won
mesh_terms: D000230:Adenocarcinoma / Q000175:diagnosis* / Q000473:pathology; D000328:Adult; D000368:Aged; D002299:Cardia / Q000473:pathology; D003951:Diagnostic Errors; D005260:Female; D005773:Gastroscopy; D006801:Humans; D008297:Male; D008875:Middle Aged; D011379:Prognosis; D011706:Pyloric Antrum / Q000473:pathology; D013274:Stomach Neoplasms / Q000175:diagnosis* / Q000473:pathology