Table 1.
Clinical characteristics
| Characteristic | Number of patients | |
| Postoperative chemotherapy | No postoperative chemotherapy | |
| Sex | ||
| Males | 11 | 9 |
| Females | 7 | 6 |
| Primary tumor location | ||
| Cecum | 3 | 2 |
| Colon | 2 | 2 |
| Sigmoid colon | 7 | 6 |
| Rectum | 6 | 5 |
| Tumor stage at the time of diagnosis | ||
| Stage I | 1 | 0 |
| Stage II | 3 | 9 |
| Stage III | 14 | 5 |
| Stage IV | 0 | 1 |
| Surgery | ||
| Right hemicolectomy | 3 | 3 |
| Anterior resection | 1 | 3 |
| Low anterior resection | 9 | 2 |
| Subtotal colectomy | 1 | 0 |
| Pelvic exenteration | 0 | 5 |
| Left hemicolectomy | 1 | 0 |
| Abdomino-perineal resection | 2 | 2 |
| Total proctocolectomy | 1 | 0 |
| Additional therapy | ||
| Neoadjuvant chemotherapy | 1* | 3* |
| Neoadjuvant radiation therapy | 0 | 6 |
| Postoperative chemotherapy | 18 | 0 |
| Postoperative radiation therapy | 3** | 0 |
* Also received neoadjuvant radiation therapy
** Also received postoperative chemotherapy