1.1 Virtual chromoendoscopy using NBI, FICE or i‑scan is recommended to assess polyps of 5 mm or less during colonoscopy, instead of histopathology, to determine whether they are adenomatous or hyperplastic, only if:
high-definition enabled virtual chromoendoscopy equipment is used
the endoscopist has been trained to use virtual chromoendoscopy, and accredited to use the technique under a national accreditation scheme
the endoscopy service includes systems to audit endoscopists and provide ongoing feedback on their performance (see section 6.1) and
the assessment is made with high confidence.