Table 1. Clinical characteristics of the 50 CRC patients and 20 asymptomatic controls.
| Clinical features | CRC patient | Asymptomatic control | |
|---|---|---|---|
| (n=50) | (n=20) | ||
| Sex | Male | 27 (54%) | 9 (45%) |
| Female | 23 (46%) | 11 (55%) | |
| Age | Median (range) | 64 (37-86) | 30 (25-48) |
| CEA | Positive rate | 16% | 0% |
| iFOBT | Positive rate | 50% | 0% |
| Tumor Stage | 0+I | 13 (26%) | NA |
| II | 17 (34%) | NA | |
| III | 19 (38%) | NA | |
| IV | 1 (2%) | NA | |
| Tumor site | Right* | 14 (28%) | NA |
| Left** | 21 (42%) | NA | |
| Rectum | 15 (30%) | NA | |
| Treatment | Surgery | 50 (100%) | NA |
| Chemotherapy | 23 (56%) | NA | |
| Radiotherapy | 3 (6%) | NA | |
| Target therapy | 1 (2%) | NA |
*
Right site = cancer located in the cecum, ascending colon, transverse colon, and hepatic flexture
**
Left site = cancer located in the sigmoid, descending colon, and splenic flexture
NA = not available