Fig. 1

Endoscopic image in the preoperative state. a and b: White light images of the middle-third and lower-third of the gastric body. More than ten small flat erosive lesions less than 5 mm in diameter were widely scattered (white and yellow arrowheads). By narrow-band imaging (c), those lesions were observed as brownish lesions (white and yellow arrowheads). d A magnified image of the lesion identified by a yellow arrowhead. A corkscrew-like irregular microvascular pattern with normal grandular structure was observed. e and f: White light and narrow-band images of lesions located at the upper gastric body