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| Characteristics | Total |
|---|---|
| N | 60 |
| Sex | |
| Male | 38 |
| Female | 22 |
| Age (years) | 60.4±9.6 |
| Anatomical location | |
| Right-sided colon | 23 |
| Left-sided colon | 15 |
| Rectum | 22 |
| Tumor stage | |
| I | 9 |
| II | 24 |
| III | 16 |
| IV | 11 |
| Differentiation stage | |
| Well-differentiated | 16 |
| Moderately differentiated | 31 |
| Poorly differentiated | 13 |
| CEA | |
| Normal | 19 |
| Elevated | 41 |
| CA199 | |
| Normal | 31 |
| Elevated | 29 |
CA199, carbohydrate antigen 199; CEA, carcinoembryonic antigen.
