Magnifying Endoscopy with Narrow Band Imaging for Diagnosis of Early Colorectal Cancer

  • Naoyuki Uragami


Narrow band imaging (NBI) was developed by Gono et al. (1) and has been applied widely for the diagnosis of cancer by gastrointestinal endoscopy. In cases of colorectal tumors, in particular, a number of reports have demonstrated the potential utility of NBI for: 1) detecting lesions at screening colonoscopy (2, 3); 2) qualitative diagnosis based on pit patterns and tumor surface vessels (4, 5, 6, 7, 8); and 3) predicting invasion depth. No dye is used for the NBI observation, and digital NBI images (image-enhanced endoscopy) can be obtained easily at the touch of a button on the electronic endoscope. With no requirement for troublesome procedures such as dye spraying and rinsing of the lesion, NBI has been accepted with ease by endoscopists worldwide.


Narrow Band Imaging Vascular Pattern Screen Colonoscopy Conventional Colonoscopy Qualitative Diagnosis 
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Copyright information

© Springer 2009

Authors and Affiliations

  • Naoyuki Uragami
    • 1
  1. 1.Gastroenterology CenterThe Cancer Institute Hospital of JFCRTokyoJapan

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