Table 2

Gastric NET classification and features

CharacteristicType IType IIType III
Associated diseaseChronic atrophic gastritis-A and pernicious anaemiaZollinger Ellison syndrome and MEN-1None
Proportion of tumours80%5%15%
Site of tumourFundus/bodyFundus/body (occasionally antrum)Antrum or fundus
Number of tumoursMultipleMultipleSingle
Size of tumour<1 cm<1 cm2–5 cm
Plasma gastrin concentrationHighHighNormal
Gastric acid outputLowHighNormal
PrognosisGoodGoodPoor
  • MEN, multiple endocrine neoplasia.