두경부암 진단의 새로운 내시경 진단방법 협대역 영상 (Narrow Band Imaging, NBI)의 유용성-전향적 연구

Usefulness of Narrow Band Imaging Endoscopy in the Diagnosis of Head and Neck Cancer : A Prospective Study

Background and Objectives：Narrow Band Imaging(NBI) is a novel optical technique that enhances the vi-sualization of superficial microvascular architecture which is commonly increased and founded as an irregular shape in a neoplastic lesion. The aim of this study is the evaluation of the usefulness of NBI in the diagnosis of Head and Neck Cancer. Subjects and Methods：From December 2009 to January 2011, 31 consecutive patients who were diagnosed with head and neck malignancy were enrolled in this prospective study. The malignant find-ings of NBI were demarcated brownish lesion or increased intraepithelial papillary capillary loops(IPCLs) with or without irregularity. Results：There were 29 cases(93.5%) of well demarcated brownish lesion, 26 cases(83.9%) of increased IPCLs and 4 cases(12.9%) of satellite lesions. Diagnostic accuracy of endoscopic examination was increased from 83.9% to 93.5%, when NBI was applied to the conventional endoscopy(p＞0.05). Conclusion： NBI is a powerful and safe screening test, which can be performed in out patient clinic without any supplemen-tary procedure.