Improving postoperative survival in cholangiocarcinoma: development of surgical strategies with a screening program in the epidemic region.

2 ), 66 patients entering treatment process by screening program had a longer survival than 367 patients who visit hospital in later period with usual presentation but did not reach statistical significance: MST of 51 months vs. 38 months and 5-year OS 49.5% vs. 39.3% ( p = 0.06).

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