681439.fig.007a
(a)
681439.fig.007b
(b)
681439.fig.007c
(c)
681439.fig.007d
(d)
Figure 7: (a) Conventional endoscopy shows an esophageal circumferential long-segment neoplasia with hyperemic changes and nodularity of surface mucosa which turns to brownish discoloration (b) under narrow-band imaging system. (c) Under magnification with narrow-band imaging, abnormal superficial vessels are well demonstrated (Inoue’s classification type ). (d) Chromoendoscopy with 1.5% Lugol’s solution shows extended Lugol-voiding area.