Table 3

Staging the duodenum and ampulla and recommended OGD surveillance intervals

Points allocated
123
Number of polyps1–45–20>20
Polyp size (mm)1–45–10>10
Histological typeTubularTubulovillousVillous
Degree of dysplasiaMildModerateSevere
  • OGD, oesophago-gastro-duodenoscopy.