Background: To evaluate the new preoperative Changgung classification (CC) system of portal vein thrombosis (PVT) in choosing suitable operative procedures to reconstruct portal veins during liver transplantation (LT) in patients with portal vein cavernous transformation (PVCT).
Methods: This retrospective observational study analyzed data from allograft LTs performed for various liver diseases.
Results: The study included 22 males and 4 females with LT indications comprising cirrhosis ( = 9), hepatocellular carcinoma ( = 12), PVCT ( = 2), liver failure from fulminant hepatitis B ( = 1), dysfunction of transplanted liver ( = 1), and chronic rejection of transplanted liver ( = 1). Patients were classified according to Yerdel (21 Yerdel II and 5 Yerdel III) and CC (C1-C5). In total 16 simple operations were performed on C1-C3 cases and 9 complex operations on C4-C5 cases, with one additional simple operation. The distribution according to the Yerdel classification was 16 simple and 5 complex operations in Yerdel II cases and 1 simple and 4 complex operations in Yerdel III cases. The median follow-up time was 27.5 months with overall one-year and three-year OS rates of 88.1% and 83.9% for the cohort. Specifically, the one-year OS rates for patients classified as C1-3 vs. C4-5 were 93.3% and 80.0%, while the three-year OS rates were 86.7% and 80.0%, respectively ( = 0.526).
Conclusion: The CC proposed in this study shows comparable potential to the Yerdel classification in preoperatively identifying the need for complex surgical techniques in LT patients with PVCT and may also have predictive power for the survival benefits following LT.
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