Endoscopic polidocanol foam sclerobanding for the treatment of grade II-III internal hemorrhoids: A prospective, multi-center, randomized study

Figure 1 Endoscopic transparent cap-assisted endoscopic foam sclerobanding for the treatment of internal hemorrhoids. A: An obvious red color sign of internal hemorrhoids was observed with the transparent cap (indicated by arrows); B: Submucosal foam polidocanol injection, the white foam, was prominently raised; C: Negative pressure remove and ligation of the hemorrhoids with a retroflexed position. The white ball (arrow) is the ligated mucosa after foam sclerotherapy injection.