Narrow band imaging (NBI) improves diagnosis of laryngopharyngeal cancer, but most reported NBI studies are from experienced centers. Feasibility reports on use at everyday outpatient departments are needed.Researcher-initiated, prospective, multicenter.Participating physicians were instructed in NBI technique during a 4-hour meeting. Patients underwent an examination that included endoscopy with white light (WL) high-definition (HD) TV and NBI filter in the selected time period. All suspicious lesions were biopsied. The medical records of patients with NBI negative findings were evaluated 6 months after the visit to detect all possible malignant lesions coming into view at mucosal sites. These were considered as false-negative cases, enabling long-term assess to the positive predictive value (NPV) of the protocol.We enrolled 125 patients. Of those, 84 (67.2

作者：Leif J J, B?ck；Jami, Rekola；Lassi, Raittinen；Elina, Halme；Petra, Pietarinen；Harri, Keski-S?ntti；Leena-Maija, Aaltonen；Antti A, M?kitie；Antti, Raappana；Jukka, Tikanto；Aleksi, Schrey；Reidar, Grenman；Jussi, Laranne；Petri, Koivunen；Heikki, Irjala

来源：The Laryngoscope 2017 年 127卷 8期