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A 66-year-old woman with a background of diverticular disease, hypertension, chronic kidney disease and amaurosis fugax was referred to our unit for colonoscopy as part of the bowel cancer screening programme following a positive faecal occult blood result. The colonoscopy was performed following bowel preparation with Moviprep and under sedation with Midazolam 1.5 mg and Pethidine 25 mg. The procedure was straightforward using carbon dioxide for insufflation. Upon examination of the ascending colon several bright red linear lesions with some extravasation of fresh blood were noted (figure 1). These lesions were visualised in …