Locoregional and Surgical Treatment of Single-Nodule Hepatocellular Carcinoma Recurrence After Liver Transplantation: A Systematic Review and a Meta-Analysis.

Background: Liver transplantation (LT) is regarded as a curative approach for patients with hepatocellular carcinoma (HCC), especially those with underlying advanced liver disease. However, the recurrence of HCC post-LT poses significant challenges, with reported rates of 15-20% within the first two years following surgery. Effective management of single-nodule recurrence is critical to improving patient outcomes. Methods: This meta-analysis evaluates the efficacy of surgical resection versus locoregional therapies (LRT) in patients with localized HCC recurrence after LT. We adhered to the PRISMA Statement in conducting a thorough search of relevant studies published from 2009 to 2024, ultimately including ten studies that met our eligibility criteria. Results: The results indicate that patients undergoing surgical treatment displayed superior one-year overall survival (OS) rates compared to those receiving LRT (71% vs. 62%, p = 0.038), as well as higher one-year disease-free survival (DFS) rates (60% vs. 54%, p = 0.042). Notably, patients in the LRT group presented with more advanced HCC characteristics prior to transplantation, including higher rates of microvascular invasion and elevated alpha-fetoprotein levels. Conclusions: Our findings suggest that while surgical resection is associated with better survival outcomes, the choice between surgical and locoregional approaches must be individualized based on tumor characteristics and liver function. The ongoing development of standardized guidelines with the inclusion of immunotherapy or targeted agents will be essential in refining treatment pathways and improving outcomes for patients experiencing HCC recurrence following LT.