The research of prognosis and evaluation of vocal leukoplakia by narrow band image endoscope

Abstract

Objective:To explore the ability of narrowband imaging to predict the nature of leukoplakia of the vocal cords Method:In 46 patients with leukoplakia of the vocal cords, laryngoscopy was performed simultaneously with white light and narrow-band imaging modes. Type the images and compare with the postoperative pathological results. The receiver operating characteristic curve and the area under the curve are used to judge the diagnostic accuracy of different examination methods. Result:The AUC in white light mode is 0.642, which predicts the sensitivity of early vocal cord cancer is 41.67%, and the specificity is 97.06%; For NBI mode, the AUC is 0.896（P<0.05） and its sensitivity and specificity is 58.33% and 97.06%, respectively. Conclusion:Compared with white light mode, NBI mode is more sensitive and accurate in identification of benign and malignant vocal cord lesions.