Endoscopic diagnosis and treatment of gastric dysplasia and early cancer: Current evidence and what the future may hold

Figure 5 Endoscopic submucosal dissection using an additional working channel[172]. A: Lesion marked via usual working channel; B: Submucosal injection; C: Near-circumferential incision made; D: Lesion grasped for countertraction via additional working channel while dissection underway. Citation: Knoop RF, Wedi E, Petzold G, Bremer SCB, Amanzada A, Ellenrieder V, Neesse A, Kunsch S. Endoscopic submucosal dissection with an additional working channel (ESD+): a novel technique to improve procedure time and safety of ESD. Surg Endosc 2021; 35: 3506-3512. ©The Author(s) 2021. Published by Springer Open Access Article.