Survival outcomes of the 2 biliary tumor thrombus subtypes
| Types | Type I: intrahepatic BTT | P | Type II: extrahepatic BTT | P | ||
|---|---|---|---|---|---|---|
| Subtypes | Type Ia: tumor thrombosis involving the second-order intrahepatic duct or above | Type Ib: tumor thrombosis involving the first-order intrahepatic duct | Type IIa: TB < 300 μmol/L | Type IIb: TB > 300 μmol/L | ||
| OS (%) | 0.070 | 0.023 | ||||
| 1-year | 97.1% | 82.4% | 68.4% | 62.5% | ||
| 3-year | 42.9% | 32.4% | 24.8% | 12.5% | ||
| OS (month) | 44.4 | 30.4 | 23.9 | 17.4 | ||