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Preoperative and postoperative change of serum CA19-9 and CEA concentrations in patients with cholangiocarcinoma undergoing curative resection (mean ± SD)
| Groups | CA19-9 (KU/L) | CEA(μg/L) |
| After the resectable (n = 15) | 62.01 ± 17.43a | 28.69 ± 11.03c |
| Before the resectable (n = 15) | 286.41 ± 4.36 | 39.41 ± 24.35 |
| The unresectable (n = 20) | 391.37 ± 5.76b | 43.28 ± 20.68 |
P < 0.001, bP < 0.01, cP < 0.05 vs before the respectable group.
