| Theme |
Magnifying Endoscopy -- Is It Really Necessary for All the Endoscopists? |
| Title |
Magnified Endoscopy with Narrow Band Imaging for Superficial Pharyngeal Cancer |
| Author |
Toshiro Iizuka |
Department of Gastroenterology, Toranomon Hospital |
| Author |
Daisuke Kikuchi |
Department of Gastroenterology, Toranomon Hospital |
| Author |
Satoshi Yamashita |
Department of Gastroenterology, Toranomon Hospital |
| Author |
Ai Hujimoto |
Department of Gastroenterology, Toranomon Hospital |
| Author |
Noriaki Nakamura |
Department of Gastroenterology, Toranomon Hospital |
| Author |
Akira Mastui |
Department of Gastroenterology, Toranomon Hospital |
| Author |
Toshihumi Mitani |
Department of Gastroenterology, Toranomon Hospital |
| Author |
Yuichiro Kuroki |
Department of Gastroenterology, Toranomon Hospital |
| Author |
Shu Hoteya |
Department of Gastroenterology, Toranomon Hospital |
| Author |
Naohisa Yahagi |
Department of Gastroenterology, Toranomon Hospital |
| [ Summary ] |
Two factors are important in producing a diagnosis of superficial otopharyngeal and hypopharyngeal cancer with Narrow Band Imaging (NBI). One factor is observation of well demarcated brownish areas. The other factor is observation of scattered brown dots within this area. With magnified NBI observation those brown dots may be recognized more clearly. Therefore, magnified NBI observation is not only helpful for making a diagnosis of superficial cancers in oto and hypopharyngeal sites but is also effective in differentiating lesions which are suspected of being cancerous through use of white light endoscopy or NBI. The accuracy and specificity of magnified NBI observation are reported to be 97.8% and 97.5% respectively. This modality plays an important role in regions of oto and hypopharyngeal physiology where iodine cannot be sprayed. |