Table 1. Clinicopathologic characteristics of 90 young patients with MAC and SRC.
| Variable | Value | Percentage |
|---|---|---|
| Median age (range), y | 36 (20–40) | - |
| Gender, n | ||
| Male | 69 | 77% |
| Female | 21 | 23% |
| Primary tumor location, n | ||
| Colon | 48 | 53.3% |
| Rectum | 42 | 46.7% |
| Histologic types, n | ||
| MAC | 69 | 77% |
| SRC | 21 | 23% |
| Adjuvant CT | ||
| Yes | 83 | 92.2% |
| No | 7 | 7.8% |
| Cycles of adjuvant CT, n | ||
| ≥6 | 76 | 84.4% |
| <6 | 14 | 15.6% |
| Tumor size, cm | ||
| ≥5 | 45 | 50% |
| <5 | 45 | 50% |
| Surgical type, n | ||
| Radical | 65 | 72.2% |
| Palliative | 25 | 17.8% |
| T stage, n | ||
| T1/T2 | 4 | 4.4% |
| T3/T4 | 86 | 85.6% |
| N stage, n | ||
| N0 | 23 | 25.6% |
| N1 | 30 | 33.3% |
| N2 | 37 | 41.1% |
| Metastasis, n | ||
| No | 69 | 76.7% |
| Yes | 21 | 23.3% |
| Stage, n | ||
| I/II | 15 | 16.7% |
| III/IV | 75 | 83.3% |
| Preoperative CEA levels | ||
| Mean (range), U/ml | 18.5 (0.2–279) | - |
| Lymphovascular invasion, n | ||
| Positive | 41 | 45.6% |
| Negative | 49 | 54.4% |
| Perineural invasion, n | ||
| Positive | 40 | 44.4% |
| Negative | 50 | 55.6% |
Abbreviations: n, number; y, year.