ArticleBJS open2025
Prognostic role of tumour volume and downstaging response on outcome after liver transplantation for colorectal liver metastases: retrospective study.
Article in BJS open, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
backgroundThe incidence of colorectal cancer is increasing, and the liver remains the predominant site for metastases. Whereas liver resection is the standard treatment for colorectal liver metastases (CRLMs), liver transplantation (LT) has re-emerged as a viable option for selected patients. The aim of this study was to investigate whether tumour volume and changes in tumour volume during chemotherapy before transplantation predict overall survival.
methodsPatients who underwent LT for CRLMs between November 2006 and August 2020 were included. Tumour volumes were measured via manual segmentation on computerized tomography scans at baseline, at maximum tumour volume, and immediately before LT. Response to chemotherapy was assessed using Response Evaluation Criteria in Solid Tumours (RECIST) criteria, and the heterogeneous response was noted to investigate whether this subgroup performs differently. Receiver operating characteristic analysis was conducted to determine a tumour volume cut-off value for predicting overall survival. Overall survival between groups was compared using Kaplan-Meier curves and log rank test.
resultsFifty-nine patients who underwent LT for CRLMs were analysed retrospectively. Receiver operating characteristic analysis revealed that final tumour volume at time of LT was a strong predictor of 5-year overall survival (area under the curve= 0.789), with a 35 mL cut-off providing optimal clinical discrimination. Patients achieving a final tumour volume below 35 mL, either consistently or via downstaging, demonstrated significantly improved survival compared with those with persistently high tumour volumes (4.54 years versus 2.17 years; P < 0.001). Heterogeneous responses to chemotherapy were associated with poorer prognosis with no patients surviving beyond 2.16 years (P < 0.001).
conclusionDynamic tumour assessment, particularly measuring tumour volume to below 35 mL, is an important prognostic marker in LT for CRLMs.
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