Table 4.
Annual incidence (cases per million) of functional PETs
| Author, year | Country | Annual incidence of all PETs | Insulinoma | Gastrinoma | VIPoma | Glucagonoma |
|---|---|---|---|---|---|---|
| Eriksson, 1989(Eriksson et al. 1989) | Sweden | 4 | 1.1 | 1.2 | 0.64 | 0.04 |
| Watson, 1989(Watson et al. 1989) | Northern- Ireland | 2.3 | 1.2 | 0.5 | 0.12 | 0.12 |
| Service, 1991(Service et al. 1991) | USA | - | 4 | - | - | - |
| Cullen, 1987(Cullen and Ong 1987) | New Zealand | 0.67 | - | - | - | |
| Jacobsen, 1986(Jacobsen et al. 1986) | Denmark | - | - | 0.5 | - | - |
| Stamm, 1991(Stamm et al. 1991) | Switzerland | - | - | 2–4 | - | - |