Management of bleeding during endoscopic resections (and even more so in endoscopic submucosal dissection [ESD]) is a critical aspect of the procedure. The low rectum has a higher risk of bleeding because of a rich venous plexus; this can increase procedure time compared with the proximal rectum.1 Red dichromatic imaging (RDI), a novel image-enhanced endoscopy technology, has been reported to improve the visibility of deep vessels and bleeding points compared with white-light imaging (WLI).2-4 WLI can be switched to RDI instantly with the press of a single button on the endoscope.