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Related Experiment Videos

Sequential percutaneous microwave coagulation therapy for liver tumor

M Sato1, Y Watanabe, Y Kashu

  • 1Department of Surgery II, Ehime University School of Medicine, Japan.

American Journal of Surgery
|May 6, 1998
PubMed
Summary

A new sequential microwave coagulation therapy (MWCT) technique enhances liver tumor treatment. This method uses multiple needles for improved coagulation, showing promise for selected patients.

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Area of Science:

  • Hepatobiliary surgery
  • Interventional radiology
  • Oncology

Background:

  • Percutaneous microwave coagulation therapy (PMCT) is an established treatment for small liver tumors.
  • Enhancing the radicality of PMCT is crucial for improved patient outcomes.
  • A novel sequential coagulation technique was developed to address this need.

Purpose of the Study:

  • To evaluate the efficacy and safety of a sequential microwave coagulation technique for liver tumors.
  • To assess the feasibility of using a disk-type introducer for multi-needle placement.
  • To determine the potential of this technique to improve tumor eradication rates.

Main Methods:

  • The technique involves sonography-guided insertion of a first needle, followed by multi-needle placement using a disk-type introducer at regular intervals.

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  • Microwave irradiation is then applied sequentially.
  • The study included six patients with liver tumors (4 hepatocellular carcinoma, 2 liver metastasis) ranging from 15 to 80 mm.

    • Main Results:

    • The technique can coagulate an area up to 60 mm in diameter per session.
    • Successful insertion of 2 to 11 needles was achieved without complications.
    • Three patients treated with curative intent showed no tumor recurrence; three others had incomplete treatment due to tumor size or location.

    Conclusions:

    • This preliminary study suggests the sequential microwave coagulation technique is effective and safe for selected liver tumor patients.
    • The technique facilitates and secures PMCT, potentially improving treatment outcomes.
    • Further research is warranted to optimize its application in diverse clinical scenarios.