Table 4.

Characteristics of false‐negative cases

Characteristics	6 EGCs (18 ME‐NBI images)
Male/female, n	2/4
Age, average (range), years	65.3 (44–75)
Tumor location, n, upper third/middle third/lower third	1/3/2
Tumor size, average (range), mm	10.2 (3–32)
Macroscopic types, n, 0‐I/0‐IIa/0‐IIb/0‐IIc/Type 0 mixed	0/0/0/5/1 (0‐IIb + IIc)
Depth of tumor, n, T1a (mucosa)/T1b (submucosa)	6/0
Helicobacter pylori infection, n, positive/negative (eradication/uninfected)	1/5 (4/1)

0‐I, protruded; 0‐IIa, flatly elevated; 0‐IIb, flat; 0‐IIc, flatly depressed.

EGC, early gastric cancer; ME‐NBI, magnifying endoscopy with narrow‐band imaging.