Post-colonoscopy colorectal cancer rate in the era of high-definition colonoscopy

Figure 2 Possible explanations for the 9 “missed or new” post-colonoscopy colorectal cancers. The bar chart shows the number of each possible explanation for the 6 early “missed or new” PCCRCs (left) and the 3 advanced “missed or new” PCCRCs (right). Among the 6 early “missed or new”PCCRCs, possible explanations were a non-polypoid shape in 5 cases (83%), presence of synchronous multiple (n ≥ 3) polyps at initial colonoscopy in 4 (67%), a small size (< 10 mm) in 2 (33%), and a blind location in 1 (17%). For all 3 (100%) of the advanced “missed or new” PCCRCs, a blind location was considered to have been likely. PCCRC: Post-colonoscopy colorectal cancer.