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Percutaneous alcohol ablation for liver metastasis
1Oncology and Endoscopic Units, Paoli-Calmettes Institute, Marseilles, France.
Percutaneous alcohol injection (PAI) effectively treats small liver metastases, achieving complete necrosis in over 50% of cases. While PAI is a viable option, newer local tumor destruction techniques are expected to supersede it.
Area of Science:
- Hepatology
- Interventional Radiology
- Oncology
Background:
- Ultrasound-guided percutaneous alcohol injection (PAI) is established for hepatocellular carcinoma treatment.
- Its role in treating liver metastases remains less explored.
- Alcohol induces coagulative necrosis, fibrosis, and vascular thrombosis.
Purpose of the Study:
- To evaluate the efficacy of PAI in treating liver metastases.
- To determine the potential of PAI as an alternative treatment for select liver metastases.
Main Methods:
- Review of published studies on PAI for liver metastases.
- Analysis of complete necrosis rates achieved with PAI.
Main Results:
- PAI achieves lower complete necrosis rates compared to hepatocellular carcinoma treatment.
- Complete necrosis is achievable in over 50% of liver metastases < 4 cm.
- PAI is effective for small colorectal, mammary, or endocrine tumor metastases when surgery is contraindicated.
Conclusions:
- PAI is a reasonable option for selected small liver metastases.
- Emerging local tumor destruction techniques like ILP, cryoablation, and RFA may replace PAI in the future.
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