| Objective:To explore whether narrowband imaging(NarrowbandImaging,NBI)can more accurately judge the benign and malignant tumors of nasopharynx and improve the positive rate of biopsy of nasopharyngeal malignant tumors,so as to reduce missed diagnosis and misdiagnosis.Methods:Collected from April 2020 to October 2021 at the Department of Otolaryngology and Head and Neck Surgery of Guangyuan Central HospitalHospital,Computed Tomography,Magnetic Resonance Imaging or electronic nasopharyngeal endoscopy showed that the nasopharynx was occupying the nasopharynx,and the initial diagnosis was nasopharyngeal swelling Patients with nasopharyngeal tumor were taken as the research object.White light endoscopy and NBI endoscopy were used to examine the nasopharynx of the patients,and pictures and videos were collected.Pathological biopsy was taken from the site.The white light mode,NBI mode,and the combination of the two were compared in the ability to identify different vascular patterns in the nasopharynx,and the sensitivity,specificity,positive predictive value,negative predictive value,and accuracy of nasopharyngeal malignant tumor detection.Statistical software SPSS25.0 was used for analysis.When P<0.05,the difference in results was considered to be statistically significant,so as to explore the value and ability of white light endoscopy and narrow-band imaging endoscopy in screening nasopharyngeal malignant tumors.Results:Among the 104 patients,55 were diagnosed with nasopharyngeal malignancy by pathological biopsy,including 54 with nasopharyngeal carcinoma,1 with nasopharyngeal NK/T lymphoma,and 49 with benign lesions,including 11 with nasopharyngeal lymphoid hyperplasia and 21 with nasopharyngeal cyst.17 cases of chronic inflammation of nasopharyngeal mucosa.In NBI mode,55 cases of malignant lesions were detected,51 cases were positive,4 cases were negative,and 49 cases were benign lesions,5 cases were positive and 44 cases were negative.The sensitivity was 92.7%,the specificity was 89.8%,the positive predictive value was 91.1%,the negative predictive value was 91.7%,and the accuracy rate was 91.3%;while 55 cases of malignant lesions were detected in the ordinary white light mode,46 cases were positive,9 cases were negative,and 49 benign lesions were detected in 7 cases and 42 cases were negative.The sensitivity was 83.6%,the specificity was 85.7%,the positive predictive value was 86.7%,the negative predictive value was 82.3%,and the accuracy was 84.6%.After combining the white light pattern with the NBI pattern,55 malignant lesions were detected:positive in 53 cases,NBI negative in 2 cases,49 benign lesions,positive in 3 cases,and NBI negative in 46 cases.The sensitivity was 96.4%,the specificity was 93.9%,the positive predictive value was 94.6%,and the negative predictive value was 95.8%.The accuracy rate was 95.2%,and the sensitivity,negative predictive value and accuracy rate were statistically different after comparison.(Sensitivity:χ2=10.491,P-value 0.005<0.05;negative predictive value:χ2=10.583,P-value 0.005<0.05 Accuracy:χ2=6.604,P-value 0.037<0.05).Conclusion:The combination of white light model and NBI model can more accurately judge the benign and malignant nasopharyngeal masses,and has advantages in sensitivity,negative predictive value and accuracy,while the NBI model has advantages only in sensitivity compared with the white light model.Therefore,in the benign and malignant screening of nasopharyngeal masses,the use of white light endoscopy or NBI endoscopy to diagnose nasopharyngeal carcinoma will lead to an increase in the rate of missed diagnosis and misdiagnosis.In clinical application,white light endoscopy and NBI endoscopy should be combined to make a more accurate judgment. |
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