Endoscopic detection of early upper GI cancers

Louis Michel Wong Kee Song

Research output: Contribution to journalArticlepeer-review

46 Scopus citations


The detection of early-stage neoplastic lesions in the upper GI tract is associated with improved survival and the potential for complete endoscopic resection that is minimally invasive and less morbid than surgery. Despite technological advances in standard white-light endoscopy, the ability of the endoscopist to reliably detect dysplastic and early cancerous changes in the upper GI tract remains limited. In conditions such as Barrett's oesophagus, practice guidelines recommend periodic endoscopic surveillance with multiple biopsies, a methodology that is hindered by random sampling error, inconsistent histopathological interpretation, and delay in diagnosis. Early detection may be enhanced by several promising diagnostic modalities such as chromoendoscopy, magnification endoscopy, and optical spectroscopic/imaging techniques, as these modalities offer the potential to identify in real-time lesions that are inconspicuous under conventional endoscopy. The combination of novel diagnostic techniques and local endoscopic therapies will provide the endoscopist with much needed tools that can considerably enhance the detection and management of early stage lesions in the upper GI tract.

Original languageEnglish (US)
Pages (from-to)833-856
Number of pages24
JournalBest Practice and Research: Clinical Gastroenterology
Issue number6
StatePublished - Dec 2005


  • Barrett's oesophagus
  • Chromoendoscopy
  • Confocal endoscopy
  • Dysplasia
  • Fluorescence imaging
  • Gastric cancer
  • Magnification endoscopy
  • Narrow band imaging
  • Oesophageal cancer
  • Optical coherence tomography
  • Spectroscopy

ASJC Scopus subject areas

  • Gastroenterology


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