Endoscopic injection sclerotherapy under red dichromatic imaging for esophageal varices.

This is a significant study since it establishes objectively that RDI improves the EV visibility in intravariceal sclerotherapy for EVs by employing color difference evaluation. Endoscopic injection sclerotherapy (EIS) or endoscopic variceal ligation (EVL) has been used to treat potentially risky esophageal varices (EVs).1 Although the recurrence rate following endoscopic therapy of EVs has been reported to be lower with EIS, particularly with intravariceal sclerotherapy, than with EVL, EVL is widely applied worldwide due to its simplicity. In the current issue of I Digestive Endoscopy i , Furuichi I et al i .3 explored the utility of red dichromatic imaging (RDI), a novel image-enhanced endoscopic function, in the intravariceal sclerotherapy of EVs. [Extracted from the article]