Abstract
Extracorporeal traction-assisted endoscopic submucosal dissection (ESD) for superficial pharyngeal carcinoma has been useful [1] [2] [3]. However, owing to the anatomical features of the larynx and thyroid cartilage, working spaces within the pharynx are narrow. Furthermore, instruments such as intubation tubes, laryngoscopes, grasping forceps [1], and thin endoscopes [2] for traction of the lesion interfere with the endoscope, making endoscopic maneuverability difficult. Methods to overcome such difficulties have been reported in recent years [4] [5].
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