Table 1

Sites and overall frequencies of primary NETs in the USA (from the SEER Programme) and Norway (from the NRC)12–14

Primary NETPercentage of cases
SEER (n=17 321)
Black patientsWhite patientsNRC (n=2013)
Lung18.331.921.0
Stomach5.75.75.7
Small intestine21.017.725.5
Pancreas3.74.16.9
Meckel0.10.40.5
Appendix2.03.24.8
Colon7.97.48.0
Rectum27.012.37.2
Breast0.40.41.6
Prostate0.30.41.5
Ovary1.21.62.4
  • NET, neuroendocrine tumour; NRC, Norwegian Registry of Cancer; SEER, Surveillance, Epidemiology and End Results.