Background: Portal vein embolization (PVE) and PVE with autologous mesenchymal stem cell application (PVE-MSC) increases future liver remnant volume (FLRV). The aim of this study was to compare both methods from the aspect of FLRV growth, progression of colorectal liver metastases (CLM), CLM resectability and long-term results.
Patients And Methods: Fifty-five patients with CLM and insufficient FLRV were included in the study. FLVR growth and CLM volume were evaluated using computed tomography. Liver resection was performed in patients with FLVR >30% of total liver volume.
Results: In the PVE (N=27) group, FLRV growth was observed in 23 patients (85.2%) and in 100% of patients in the PVE-MSC (N=28) group (p<0.05). The rapidity of FLRV and CLM growth did not differ between groups. R0 resection was performed in 14 (51.8%) and 24 (85.7%) patients from the PVE and PVE-MSC (p<0.02) groups, respectively. The 3-year overall and progression-free survival rates were 85.75% and 9.3% in the PVE group and 68.7% and 17.1% in the PVE-MSC group, respectively (p<0.67 and p<0.84, respectively).
Conclusion: PVE-MSC allows for more effective growth of FLRV and resectability of CLM compared to PVE. The two methods do not differ in their long-term results.
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