Table 2 Characteristics of rectal cancer patients in this study
Characteristics | Â | Â |
|---|---|---|
Age: mean age (years) ± SD |  | 61.4 ± 10.2 |
Gender | M | 45 (60.0%) |
| Â | F | 30 (40.0%) |
Tumor size (mm) ± SE |  | 45.4 ± 8.6 |
Depth of tumor* | T1 | 7 (9.3%) |
| Â | T2 | 21 (28.0%) |
T3 | 42 (56.0%) | |
T4 | 5 (6.7%) | |
Histologic type** | Well | 49 (65.3%) |
| Â | Moderate | 24 (32.0%) |
Poor | 0 (0%) | |
Mucinous | 2 (2.7%) | |
Lymphatic invasion | Positive | 7 (9.3%) |
| Â | Negative | 68 (90.7%) |
Venous invasion | Positive | 39 (52.0%) |
| Â | Negative | 36 (48.0%) |
Lymph node metastasis | Positive | 15 (20.0%) |
| Â | Negative | 60 (80.0%) |
Distant metastasis | Positive | 2 (1.3%) |
| Â | Negative | 152 (98.7%) |
Liver metastasis | Positive | 1 (0.6%) |
| Â | Negative | 153 (99.4%) |
Stage* | 1 | 23 (30.7%) |
| Â | 2 | 32 (42.7%) |
3 | 13 (17.4%) | |
4 | 7 (9.3%) | |
Tumor regression grade | 1 | 46 (61.3%) |
| Â | 2 | 29 (38.7%) |
Reduction ratio (%) ± SD |  | 33.0 ± 16.1 |