Table 1.
Characteristics of the patients with sporadic colorectal cancer
| Variable | Patients |
|---|---|
| Number |
60 |
| Men/Women |
34/26 |
| Mean age (range) |
65 (23–90) years |
| Tumor localization* |
|
| -left colon |
44 |
| -right colon |
16 |
| Tumor stage** |
|
| -T2 |
12 |
| -T3 |
43 |
| -T4 |
5 |
| -lymph node metastases (N1/N2) |
21 (12/9) |
| -distant metastases (M1) |
5 |
| Differentiation grade*** |
|
| -well |
1 |
| -moderate |
56 |
| -poor | 2 |
*Left-sided colon: colon descendens, rectum and sigmoid; right sided colon: cecum, colon ascendens, colon transversum.
**Tumor staging was done according to the TNM classification.
***Note that for one tumor sample the differentiation grade was unknown.