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Diagnostic Criteria for Perihilar Cholangiocarcinoma89
| Biopsy or cytology positive for adenocarcinoma |
| Malignant appearing stricture with cytology suspicious for adenocarcinoma |
| PLUS |
| fluorescent in situ hybridization positive for polysomy |
| Mass lesion on cross sectional imaging studies |
| Malignant biliary stricture with CA 19-9 >100 U/mL in the absence of bacterial cholangitis |
CA 19-9, carbohydrate antigen 19-9.
