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Updated: Oct 21, 2025
The Influence of Liver Resection on Intrahepatic Tumor Growth
Published on: April 9, 2016
Liver Resection for Metastases from Gastrointestinal Stromal Tumors: Does it Improve Long-Term Survival?
Background Aims:
The emergence of tyrosine kinase inhibitors, radically altered the management of GISTs and sparked controversy regarding the role of hepatic resection for metastatic tumors. This study aims to identify whether there is improvement in the overall survival of patients with gastrointestinal liver metastases, undergoing hepatic resection in the context of multimodal treatment strategy, as to those approached only by systemic therapy. Methods: Using a retrospective database, we identified 57 patients treated at our center over a 12-year period: Group A (n=31) underwent hepatic resection alongside systemic therapies, and B (n=26) only systemic therapies. In order to obtain a more robust sample, needed for the survival analysis, we performed a propensity score matching and a bootstrapping selection with Jackknife correction for errors; thus, we created an extended sample of 1000 virtual patients. Results: The overall survival measured in all patients was 47 months (95%CI:34-60); significantly higher for group A (56 months, 95%CI:37-75) compared to group B (38 months, 95%CI:19-56), (p=0.007, Log Rank test). Multivariate analysis identified one risk factor: the presence synchronous liver metastases upon diagnosis of primary. Conclusions: Liver resection following TKI therapy is the current mainstay of treatment strategy for potential cure and prolonged survival, in appropriately selected patients evaluated in an multidisciplinary tumor board.
Insights
Hepatic resection combined with systemic therapy significantly improves overall survival for patients with gastrointestinal stromal tumors (GISTs) and liver metastases compared to systemic therapy alone.
Area of Science:
- Surgical Oncology
- Gastrointestinal Oncology
- Medical Oncology
Background:
- Tyrosine kinase inhibitors (TKIs) have transformed gastrointestinal stromal tumor (GIST) management.
- The role of liver resection for metastatic GISTs remains debated.
Purpose of the Study:
- To evaluate the impact of hepatic resection on overall survival in patients with GIST liver metastases.
- To compare outcomes of multimodal treatment (surgery + systemic therapy) versus systemic therapy alone.
Main Methods:
- Retrospective analysis of 57 GIST patients over 12 years.
- Propensity score matching and bootstrapping created a virtual sample of 1000 patients.
- Comparison of overall survival between surgical (Group A) and non-surgical (Group B) cohorts.
Main Results:
- Overall survival was 47 months; significantly higher in Group A (56 months) vs. Group B (38 months) (p=0.007).
- Multivariate analysis identified synchronous liver metastases at diagnosis as a risk factor.
- Hepatic resection in conjunction with TKIs demonstrated improved survival outcomes.
Conclusions:
- Liver resection, following TKI therapy, is a key strategy for potentially curative treatment and prolonged survival in selected GIST patients.
- Multidisciplinary tumor board evaluation is crucial for patient selection.
- This approach offers improved survival for GISTs with liver metastases.
