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Hemorrhage from the point of traction on the opposing wall after colonic endoscopic submucosal dissection using countertraction: a rare adverse event.

Endoscopic submucosal dissection (ESD) is recommended for complete en bloc resection of colonic lesions that are larger than 20mm and with a high risk of limited submucosal invasion, based on depressed morphology and an irregular or nongranular surface pattern [1]. Recent studies have shown that countertraction techniques using clips and a rubber band increase the R0 resection rate and significantly decrease the procedure time, while also decreasing the complication rates (perforation and bleeding) [2]. We report here the case of an 87-year-old patient who was on no anticoagulant or antiplatelet treatment and had no prior coagulation disorder. A pseudodepressed nongranular 15-mm laterally spreading tumor (Paris 0-IIa +0-IIc, Kudo Vn, Sano IIIb, JNET III, NICE III) was found in E-Videos