Table 1 Tumor characteristics
Characteristics | Frequency |
|---|---|
Localization (n = 104) | |
Descending/sigmoid colon | 57.7 % |
Medium and lower rectum | 22.1 % |
Ascending colon | 17.3 % |
Transverse colon | 2.9 % |
Histology (n = 104) | |
Adenocarcinoma NOS | 50.0 % |
Tubular adenocarcinoma | 39.4 % |
Mucin-secreting adenocarcinoma | 4.8 % |
Mucinous adenocarcinoma | 3.8 % |
Signet ring cell carcinoma | 1.0 % |
Cribriform adenocarcinoma | 1.0 % |
Histologic differentiation (n = 92) | |
Well (1) | 6.5 % |
Moderate (2) | 82.6 % |
Poor (3) | 10.9 % |
Blood vessel invasion (n = 81) | |
Yes | 16.0 % |
No | 84 % |
Lymphatic invasion (n = 80) | |
Yes | 36.3 % |
No | 63.7 % |
Perineural invasion (n = 78) | |
Yes | 30.8 % |
No | 60.2 % |
Depth of tumor invasion (n = 98) | |
T1 | 2.0 % |
T2 | 6.1 % |
T3 | 75.5 % |
T4 | 15.3 % |
Tx | 1.0 % |
Lymph node metastasis (n = 98) | |
N0 | 30.6 % |
N1 | 32.7 % |
N2 | 35.7 % |
Nx | 1.0 % |
Metastasis (M1) at diagnosis (n =104) | |
Yes | 72.8 % |
No | 27.2 % |
TNM staging at diagnosis (n =103) | |
I | 1.0 % |
II | 11.7 % |
III | 14.6 % |
IV | 72.8 % |
Metastatic sites (n = 105) | |
Liver | 65.7 % |
Lymph nodes | 25.7 % |
Lung | 33.3 % |
Peritoneum | 17.1 % |
Skin/subcutaneous | 1.0 % |
Locoregional recidive | 11.5 % |
Metastasis resection (n = 105) | |
Yes | 58.1 % |
No | 41.9 % |