Table 2.
UICC tumour stage according to site of primary tumour. Mainly, there were more rectal cancers in UICC stage I and colon cancers in UICC stage IV (p < 0.0001).
| UICC I | UICC II | UICC III | UICC IV | Undetermined | Total | |
| Colon cancer | 80 (16.8) | 131 (27.5) | 130 (27.3) | 132 (27.7) | 3 (0.6) | 476 (100) |
| Rectal cancer | 97 (23.9) | 99 (24.4) | 136 (33.5) | 53 (13.1) | 21 (5.2) | 406 (100) |
| HNPCC* | 8 (100) | 0 | 0 | 0 | 0 | 8 (100) |
| Multicentric | 1 (8.3) | 4 (33.3) | 4 (33.3) | 3 (25) | 0 | 12 (100) |
*HNPCC: hereditary non polyposis colorectal cancer