Article Text

Download PDFPDF
Endoscopic approach to polyp recognition
  1. Conor Lahiff,
  2. James E East
  1. Translational Gastroenterology Unit, John Radcliffe Hospital, Oxford, UK
  1. Correspondence to Dr James E East, Translational Gastroenterology Unit, Experimental Medicine Division, Nuffield Department of Medicine, University of Oxford, John Radcliffe Hospital, Headley Way, Headington, Oxford OX3 9DU, UK; james.east{at}


Identification and complete resection of colorectal polyps provide a significant mortality benefit from colorectal cancer. With improvements in colonoscopic techniques and advanced endoscopic imaging techniques, polyp detection has taken on greater complexity since the establishment of bowel cancer screening programmes internationally. All endoscopists operating within symptomatic and screening populations should be aware of endoscopic features associated with advanced neoplasia. Chromoendoscopy and advanced imaging techniques, such as narrow spectrum technologies (narrow band imaging, flexible spectral imaging colour enhancement (FICE) and i-Scan digital contrast (iSCAN)), have specific classification systems to support accurate lesion characterisation. This review summarises the evidence in relation to polyp detection, recognition and characterisation as well as the identification of features of invasion. Future areas of interest include optimal management of large polyps, incorporation of a ‘detect, resect and discard’ strategy for small and diminutive polyps, expected wider use of computer decision support tools (artificial intelligence and deep learning) and the use of fluorescently labelled molecular probes to improve detection and assessment of neoplasia.


Statistics from

Request Permissions

If you wish to reuse any or all of this article please use the link below which will take you to the Copyright Clearance Center’s RightsLink service. You will be able to get a quick price and instant permission to reuse the content in many different ways.


  • Contributors CL designed and drafted the original manuscript and reviewed and updated subsequent and final drafts for important intellectual content. JEE designed and reviewed the original manuscript and was responsible for updating subsequent drafts and for important intellectual content of the manuscript.

  • Competing interests None declared.

  • Provenance and peer review Commissioned; externally peer reviewed.