“…Although rectal washout has been reported to eliminate exfoliated malignant cells [3,4,15,16], no data indicating a reduction of anastomotic implantation have been demonstrated [17,18]. Furthermore, this study was unable to Although it remains controversial in regard to whether an intensive follow-up program including rectosigmoidoscopy can improve survival [19,20], intensive flexible rectosigmoidoscopy is recommended in the guidelines for colorectal cancer surveillance [21,22].…”