Discard:Characterisation of Colonic Polyps in Vivo

Characterisation of Small Colonic Polyps in Vivo

Prospective study of accuracy of colonic polyp characterisation in vivo using high resolution white light endoscopy, narrow band imaging and chromoendoscopy.

Inclusion Criteria:

1. Patients over 18 years of age, assessed as fit for routine colonoscopy

2. Patients attending for screening or surveillance colonoscopy meeting the following criteria:

   • Polyp surveillance with at least 3 adenomas or 1 adenoma>10mm at previous colonoscopy
   • Surveillance post colorectal cancer resection
   • Screening with positive faecal occult blood test

Exclusion Criteria:

1. Patients with known colitis or polyposis syndromes
2. Unable or unwilling to give informed consent