[Application of narrow band imaging in early diagnosis of pharyngolaryngeal tumors].

Objective: To investigate the application value of narrow band imaging (NBI) in early diagnosis of pharyngolaryngeal tumors.

Method: A total of 106 patients received NBI endoscopy in the endoscopic diagnosis. Lesions found under the white-light endoscopy mode and NBI endoscopy mode were compared in the morphology of capillaries on lesiorn surface and the clarity of lesion rim.