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Related Experiment Video

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Application of Laparoscopic Hepatectomy Combined with Intraoperative Microwave Ablation in Colorectal Cancer Liver Metastasis
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Microwave coagulation for liver metastases.

Malgorzata M Bala1, Robert P Riemsma, Robert Wolff

  • 12nd Department of Internal Medicine, Jagiellonian University Medical College, 8 Skawinska St, Krakow, Poland, 31-066.

The Cochrane Database of Systematic Reviews
|October 15, 2013
PubMed
Summary

Microwave coagulation showed no significant survival benefit compared to conventional surgery for liver metastases. More research is needed to determine its effectiveness and safety in treating these tumors.

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Area of Science:

  • Oncology
  • Hepatobiliary Surgery
  • Minimally Invasive Therapies

Background:

  • Liver metastases, particularly from colorectal cancer, are common and often fatal.
  • Microwave coagulation is a technique that uses microwave energy to destroy tumor tissue through coagulative necrosis.
  • Understanding its efficacy compared to other treatments is crucial for patient outcomes.

Purpose of the Study:

  • To evaluate the benefits and harms of microwave coagulation versus no intervention, other ablation methods, or systemic treatments for liver metastases.
  • To compare microwave coagulation with conventional surgical resection for colorectal liver metastases.

Main Methods:

  • A comprehensive search of multiple databases (Cochrane Hepato-Biliary Group, CENTRAL, MEDLINE, EMBASE, etc.) was conducted up to December 2012.
  • Included all randomized clinical trials comparing microwave coagulation with other interventions for liver metastases.
  • Data extraction and bias risk assessment were performed by two independent reviewers.

Main Results:

  • One high-risk-of-bias randomized clinical trial involving 30 participants (14 microwave coagulation, 16 conventional surgery) was analyzed.
  • No significant difference in 3-year mortality (64% vs. 75%), mean survival time (27 vs. 25 months), or disease-free interval (11.3 vs. 13.3 months) was observed.
  • Adverse events were similar, with blood transfusions being more frequent in the conventional surgery group.

Conclusions:

  • Evidence from one low-quality trial is insufficient to support microwave coagulation over conventional surgery for colorectal liver metastases.
  • The procedure showed no significant benefit in survival or recurrence and similar adverse events, except for transfusion needs.
  • Microwave therapy is not recommended outside of randomized clinical trials due to insufficient evidence.