Variables | Number of patients | % |
---|---|---|
Median age | 59.0(39-77) | Â |
  ≤ 60 | 61 | 46.2 |
  > 60 | 71 | 53.8 |
Sex: M/F | 95:37 | Â |
Primary tumor location | Â | Â |
  Mid | 109 | 47.0 |
  Lower | 23 | 53.0 |
Pretreatment CEA, ng/mL* | Â | Â |
  Median | 5.32(0.1-83.3) |  |
  ≤ 5.0 | 112 | 84.8 |
  > 5.0 | 20 | 15.2 |
ypT stage | Â | Â |
  Tx | 9 | 6.8 |
  T1 | 1 | 0.8 |
  T2 | 29 | 22.0 |
  T3 | 92 | 69.7 |
  T4 | 1 | 0.8 |
ypN stage | Â | Â |
  x | 11 | 8.3 |
  0 | 83 | 62.9 |
  positive | 38 | 28.8 |
Retrieved nodes | Â | Â |
  Mean | 14.2(0-31) |  |
Lymphovascular invasion | Â | Â |
  Positive | 30 | 77.3 |
  Negative | 102 | 22.7 |
Perineural invasion | Â | Â |
  Positive | 13 | 9.8 |
  Negative | 119 | 90.2 |
Cell differentiation | Â | Â |
  Well | 12 | 9.1 |
  Moderately | 104 | 78.8 |
  Poorly or mucinous | 16 | 12.1 |
Body mass index | Â | Â |
  ≤ 22 | 39 | 29.5 |
  > 22 | 93 | 70.5 |