Impact of Histological Factors of Hepatocellular Carcinoma on the Outcome of Liver Transplantation.

Abstract

The aim of this study was to identify predictors of overall survival (OS), disease-free survival (DFS), and recurrence in a cohort of 151 patients with hepatocellular carcinoma (HCC) and cirrhosis who were treated by liver transplantation (LT). A retrospective database of patients undergoing LT for radiologically diagnosed HCC at "12 de Octubre" Hospital, Madrid during 1986-2006 was analyzed. The median follow-up was 67.44 months (SD= 55.7 months). Overall 1-, 3-, 5-, and 10-year survival was 87.5%, 73.7%, 64.1% and 43.4%, respectively. The 5-year OS of patients beyond the Milan criteria was 47.14%, whereas that of patients within the Milan criteria was 70.13% (P= .011). The 5-year OS of patients beyond the Milan criteria and with microvascular invasion (MVI) was 27.27%, whereas that of patients beyond theMilan criteria and without MVI criteria was 57.89% (P= .003). Multivariate analysis of prognostic factors revealed MVI and G3 to be independent and statistically significant factors affecting OS (P< .0001 and P= .045, respectively), DFS (P< .0001 and P= .004, respectively), and recurrence (P= .0002 and P= .028, respectively). Multivariate analysis of prognostic factors also revealed preoperative fine-needle aspiration (FNA) to be an independent negative statistically significant factor affecting recurrence (P= .0022). Multivariate analysis of predictive MVI factors revealed preoperative α-fetoprotein (AFP) levels >200ng/mL to be an independent positive and statistically significant predictor of MVI (P= .0004). MVI and G3 are independent negative factors affecting OS, DFS, and recurrence. The presence of MVI or AFP levels >200ng/mL represent a contraindication for LT, as long as the patient is beyond the Milan criteria.