Lee J, et al. - In this retrospective study, the researchers assessed the predictors of high-risk adenoma occurrence at surveillance colonoscopy in subjects who undergo colorectal adenoma removal and to illuminate the relationship between age and recurrent colorectal adenoma. Study participants were 563 subjects who had colorectal adenomas at baseline colonoscopy and who underwent surveillance colonoscopy. They found that old age (≥60 years) and the presence of multiple adenomas (3 or more) were strongly correlated with the occurrence of high-risk adenoma at surveillance colonoscopy. In the old age group, the 5-year cumulative incidence of high-grade adenoma was significantly high.