title: Comparison of the diagnostic utility of the ultrathin endoscope and the conventional endoscope in early gastric cancer screening.
abstract: Currently, transnasal esophagogastroduodenoscopy using an ultrathin endoscope is being widely carried out as a screening test for early gastric cancer. We compared the diagnostic utility of ultrathin esophagogastroduodenoscopy with that of conventional esophagogastroduodenoscopy in detecting 42 lesions of early gastric cancer that had a diameter of <or=20 mm. Only 27 lesions (64%) could be accurately diagnosed using ultrathin esophagogastroduodenoscopy. In nine lesions (22%), we failed to discern whether they were malignant. Six lesions (14%) could not even be detected. We found that the diagnostic utility of ultrathin esophagogastroduodenoscopy was inadequate, especially in the case of lesions that were located in the upper third region of the stomach and variegated lesions. In conclusion, the diagnostic utility of ultrathin esophagogastroduodenoscopy might be lower than that of conventional esophagogastroduodenoscopy in terms of screening for early gastric cancer. The disadvantages of ultrathin esophagogastroduodenoscopy should be taken carefully into consideration while examining lesions.
authors.affiliation: Department of Gastroenterology, Cancer Institute Hospital, Japanese Foundation for Cancer Research, Koto-ku, Tokyo, Japan. yuko.hayashi@jfcr.or.jp
authors.forename: Yuko
authors.initials: Y
authors.lastname: Hayashi
authors.forename: Yorimasa
authors.initials: Y
authors.lastname: Yamamoto
authors.forename: Takanori
authors.initials: T
authors.lastname: Suganuma
authors.forename: Kazuhisa
authors.initials: K
authors.lastname: Okada
authors.forename: Masami
authors.initials: M
authors.lastname: Nego
authors.forename: Shin-Ichi
authors.initials: S
authors.lastname: Imada
authors.forename: Mizuka
authors.initials: M
authors.lastname: Imai
authors.forename: Kazuhito
authors.initials: K
authors.lastname: Yoshimoto
authors.forename: Nobue
authors.initials: N
authors.lastname: Ueki
authors.forename: Toshiaki
authors.initials: T
authors.lastname: Hirasawa
authors.forename: Naoyuki
authors.initials: N
authors.lastname: Uragami
authors.forename: Tomohiro
authors.initials: T
authors.lastname: Tsuchida
authors.forename: Junko
authors.initials: J
authors.lastname: Fujisaki
authors.forename: Etsuo
authors.initials: E
authors.lastname: Hoshino
authors.forename: Hiroshi
authors.initials: H
authors.lastname: Takahashi
authors.forename: Masahiro
authors.initials: M
authors.lastname: Igarashi
mesh_terms: D000368:Aged; D055088:Early Detection of Cancer; D019723:Endoscopes; D016145:Endoscopy, Digestive System; D005260:Female; D006801:Humans; D008297:Male; D008403:Mass Screening / Q000295:instrumentation*; D008875:Middle Aged; D013274:Stomach Neoplasms / Q000175:diagnosis*