Endoscopist inexperience/skill | Ensure adequate annual volume |
Careful technique |
Quality assurance |
Incomplete colonoscopy | Repeat colonoscopy (or CT colonography) |
Inadequate bowel preparation | Use split dose preparation |
Inadequate treatment of advanced neoplasia | Careful polypectomy technique |
Appropriate postpolypectomy surveillance36 |
Failure to recognise flat lesion | Endoscopist awareness and vigilance |
Scenarios associated with increased risk (older women, diverticular disease, prior abdominal or pelvic surgery) | As above |