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Patient characteristics
| Sex (male/female) | 20/7 |
| Age (yr) | 68 (range: 45-91) |
| Tumor location | |
| Right colon | 7 |
| Left colon | 15 |
| Rectum | 5 |
| Histological type | |
| Well-differentiated adenocarcinoma | 7 |
| Moderately-differentiated adenocarcinoma | 19 |
| Mucinous adenocarcinoma | 1 |
| Tumor size (cm) | 5.2 ± 1.7 |
| Tumor depth (T1/T2/T3/T4a/T4b) | 0/1/15/6/5 |
| Stage (UICC-7th) | |
| I/II/IIIa/IIIb/IIIc/IV | 1/12/0/4/2/8 |
