Screening for Precancerous Lesions of Upper Gastrointestinal Tract: From the Endoscopists' Viewpoint
Figure 1
(a) Magnifying endoscopy under white-light imaging shows microvasculature of the normal esophagus. (b) Magnifying endoscopy under narrow-band imaging improves visualization of the reddish-brown superficial vessels (white arrow, Inoue’s classification of intraepithelial papillary capillary loops type II) and the cyanic hue deeper vessels (black arrow).
