Figure 2.

Representative images of target lesions. A slightly elevated lesion in the middle third of the stomach is observed (arrowheads). The final histopathological diagnosis was well-differentiated adenocarcinoma confined to the mucosa. (a) On white-light imaging, the lesion appears as a same-colored area with irregular margins and surfaces. (b) On texture and color enhancement imaging, the lesion appears as a same-colored area with irregular margins and surfaces. (c and d) Third-generation narrow-band imaging: The lesion appears as a brownish area with irregular margins and surfaces.