Table 1.
Baseline Characteristics of the Patients with Colorectal Cancer
| Clinicopathological parameter* | Stage I (n = 25) | Stage II (n = 26) | Stage III (n = 42) | Stage IV (n = 9) |
|---|---|---|---|---|
| Mean age, range, yr† | 61.2 ± 12.9, 29–83 | 67.0 ± 13.2, 36–91 | 63.8 ± 14.7, 26–86 | 67.8 ± 15.7, 45–89 |
| Sex | ||||
| Male | 10 | 13 | 16 | 4 |
| Female | 15 | 13 | 26 | 5 |
| Primary site | ||||
| Cecum | 3 | 1 | 1 | 0 |
| Rectum | 7 | 8 | 16 | 3 |
| Sigmoid colon | 11 | 6 | 6 | 2 |
| Colon | 2 | 3 | 9 | 1 |
| Transverse colon | 0 | 0 | 2 | 0 |
| Hepatic flexure of colon | 0 | 0 | 0 | 1 |
| Splenic flexure of colon | 0 | 1 | 0 | 0 |
| Rectosigmoid junction | 1 | 2 | 1 | 0 |
| Descending colon | 0 | 3 | 2 | 2 |
| Ascending colon | 1 | 2 | 4 | 0 |
| Appendix | 0 | 0 | 1 | 0 |
| Primary tumor (T)‡ | ||||
| T1 | 4 | 0 | 1 | 0 |
| T2 | 21 | 0 | 3 | 0 |
| T3 | 0 | 26 | 34 | 7 |
| T4 | 0 | 0 | 4 | 2 |
| Lymph node (N)§ and distant metastasis (M)¶ | ||||
| N0M0 | 25 | 26 | 0 | 0 |
| N1M0 | 0 | 0 | 24 | 0 |
| N2M0 | 0 | 0 | 18 | 0 |
| N0M1 | 0 | 0 | 0 | 2 |
| N1M1 | 0 | 0 | 0 | 2 |
| N2M1 | 0 | 0 | 0 | 5 |
*
A patient with carcinoma in situ is not included.
†
Data presented as mean ± SD.
‡
T1: invades to submucosa; T2: invades to muscle layers; T3: invades to pericolic tissues; T4: invades to other organs.
§
N0: no regional lymph node metastasis; N1: metastasis in 1–3 regional lymph nodes; N2: metastasis in ≥4 regional lymph nodes; M0: no distant metastasis; M1: distant metastasis.
¶
All of these M1 cases were distant metastases of colorectal tumors to the liver.