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A 63-year-old woman attended for colonoscopy after producing a positive faecal occult blood sample during the National Health Service Bowel Cancer Screening Programme. She was asymptomatic. At her screening colonoscopy, a smooth polypoid mass was seen at the base of the caecum (figure 1). Biopsies were taken (figures 2 and 3).
Competing interests None.
Patient consent Obtained.
Provenance and peer review Not commissioned; internally peer reviewed.