Wieszczy P, Waldmann E, Løberg M, et al. - Given that colonoscopy surveillance following adenoma removal is a growing burden in many countries, researchers examined the effect of colonoscopist performance on colorectal cancer risk following adenoma removal. Using data from the Polish screening program between 2000 and 2011, with follow-up until 2017, colorectal cancer risk was compared following removal of high-risk adenomas, low-risk adenomas, and after negative colonoscopy for all colonoscopies performed by colonoscopists with low vs high performance quality (adenoma detection rate < 20% vs ≥ 20%). In the report, 173,288 Polish colonoscopies were assessed. Four hundred forty-three colorectal cancers were diagnosed during 10 years follow-up. The findings indicate that endoscopist performance can be an additional significant contributor to polyp features in assessing the risk of colorectal cancer following screening for colonoscopy. For low-risk adenoma individuals, colorectal cancer incidence was 0.55% with low-performing colonoscopists vs 0.22% with high-performing colonoscopists. For high-risk adenoma individuals, colorectal cancer incidence was 1.14% with low-performing colonoscopists vs 0.43% with high-performing colonoscopists. After negative colonoscopy, colorectal cancer incidence was 0.30% for individuals examined by low-performing colonoscopists, vs 0.15% for high-performing colonoscopists.