Fig. 2From: A modified endoscopic submucosal dissection for a superficial hypopharyngeal cancer: a case report and technical discussiona Contrast between two kinds of transparent hood; b, A long piece of dental floss is tied to the arm of the haemoclip; c, The haemoclip with dental floss is withdrawn into the transparent hood and the accessory channel of the endoscope to enable insertion of the endoscopeBack to article page