Detection of superficial pharyngeal carcinoma is becoming more common with advances such as narrow-band imaging and blue-laser imaging. 1,2 Endoscopic submucosal dissection (ESD) for superficial pharyngeal carcinoma is useful as a minimally invasive treatment. 3,4 However, lesions at the posterior wall of the oropharynx are usually difficult to resect using a conventional transoral endoscope because they are perpendicular to the muscle layer and the subepithelial layer is quite narrow at this site (Fig. 1). In such cases, a transnasal endoscope is useful. Here we report on oropharyngeal ESD using a transnasal endoscope.
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