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Location of the lesion, Dukes’ staging and serum and bile CEA values, obtained from the patients operated for colorectal carcinoma with hepatic metastases during the follow-up
| Case | Location | Dukes | Serum CEA(ng/ml) | Bile CEA(ng/ml) |
| 1 | Transverse colon | B | 22.8 | 510.0 |
| 2 | Rectum | C | 2.1 | 292.0 |
| 3 | Rectum | C | 9.4 | 44.1 |
| 4 | Sigmoid | C | 6.6 | 6.6 |
| Average | 10.2 | 213.2 |
