Overall frequency of primary neuroendocrine tumours of the gut and its adnexa, with percentage at each site presenting with metastases at the time of diagnosis11
| Location | % of total | Nodal mets* | Liver mets |
|---|---|---|---|
| *Includes those presenting with liver metastases. | |||
| †Trachea, bronchi, and lung. | |||
| ‡Includes gastrinomas. | |||
| §Islet cell tumours. | |||
| ¶Includes benign carcinoids. | |||
| **Includes transverse colon. | |||
| Lung† | 15 | 15 | 5 |
| Stomach | 3 | 35 | 15 |
| Duodenum‡ | 3 | 60 | 30 |
| Pancreas§ | 5 | 45 | 25 |
| Jejunum | 2 | 60 | 30 |
| Ileum | 15 | 60 | 30 |
| Appendix¶ | 35 | 5 | 2 |
| Right colon** | 4 | 70 | 40 |
| Left colon | 3 | 40 | 20 |
| Rectum | 10 | 15 | 5 |
| Other | 5 | 50 | 30 |