Similarly, carbohydrate antigen 19–9 (CA19‐9) levels were elevated in the CY+ group (median: 43, IQR: 19.5–369) compared to the CY− group (median: 36.5, IQR: 14–105.8), but this difference also did not reach statistical significance ( p = 0.400).
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Significance of Intraoperative Lavage Cytology in Perihilar Cholangiocarcinoma.
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The median RFS was 21.7 months in the CY+ group and 30.6 months in the CY− group, showing a favorable trend in the CY− group but no statistically significant difference ( p = 0.357) (Figure 2A ).