Review
Copyright ©The Author(s) 2016.
World J Gastroenterol. Aug 14, 2016; 22(30): 6817-6828
Published online Aug 14, 2016. doi: 10.3748/wjg.v22.i30.6817
Table 2 Characteristics of gastric neuroendocrine tumors
CharacteristicType I G-NETsType II G-NETsType III G-NETs
Proportion of all G-NETs70%-80%5%-10%10%-15%
Associated diseaseChronic atrophic gastritisMEN type 1/ZESNone
GenderWomen > menWomen = menWomen < men
Tumor numbermultiplemultiplesingle
Tumor size< 10 mm< 10 mm> 10 mm
Tumor locationfundus or corpusfundus or corpusAny region
HistologyUsually NET G1NET G1/G2Usually NEC G3
Invasion depthMucosa or submucosaMucosa or submucosaAny depth
Serum gastrinHighHighNormal
Gastric pHHighLowNormal
Risk of Metastasis2%-5%10%-20%> 50%
PrognosisExcellentGoodPoor