Table 2.
Patient characteristics
| Age | 33–77 years (mean 61 years) |
| Gender | |
| Male | 29 |
| Female | 11 |
| Primary tumor stage (UICC) | |
| Stage I | 8 |
| Stage IIa | 10 |
| Stage IIb | 1 |
| Stage IIIa | 2 |
| Stage IIIb | 10 |
| Stage IIIc | 4 |
| Stage IV | 2 |
| Unknown | 3 |
| Primary R state | |
| R0 | 28 |
| R1 | 7 |
| R2 | 0 |
| Rx | 2 |
| Unknown | 3 |
| Primary tumor histology | |
| Adenocarcinoma | 29 |
| Mucinous adenocarcinoma | 4 |
| Unknown | 7 |
| Previous therapy | |
| Abdominoperineal resection | 19 |
| Neoadjuvant radiochemotherapy | 12 |
| Neoadjuvant radiotherapy | 0 |
| Neoadjuvant chemotherapy | 1 |
| No neoadjuvant therapy | 5 |
| Unknown | 1 |
| Anterior resection | 17 |
| Neoadjuvant chemoradiation | 12 |
| Neoadjuvant radiotherapy | 1 |
| Neoadjuvant chemotherapy | 1 |
| No neoadjuvant therapy | 3 |
| Restorative coloproctectomy | 2 |
| Full thickness local excision | 1 |
| Curative chemoradiation | 1 |
UICC Union for International Cancer Control