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[Laser and cancer therapy].

Y Hayata, H Kato

    Gan to Kagaku Ryoho. Cancer & Chemotherapy
    |June 1, 1983
    PubMed
    Summary
    This summary is machine-generated.

    Two laser therapies, Nd-YAG vaporization and photoradiation therapy (PRT) with hematoporphyrin derivative (HpD), show promise for various cancers. PRT achieved complete remission in 65.5% of early-stage cancers, particularly lung cancer.

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    Area of Science:

    • Oncology
    • Medical Physics
    • Photochemistry

    Context:

    • Cancer treatment modalities are continuously evolving.
    • Minimally invasive therapeutic options are increasingly sought.
    • Laser technologies offer targeted treatment approaches.

    Purpose:

    • To evaluate the efficacy of two laser-based therapies for various cancers: Nd-YAG laser vaporization and photoradiation therapy (PRT).
    • To assess the outcomes of PRT using hematoporphyrin derivative (HpD) in a diverse patient cohort.
    • To explore the potential of these laser therapies in different stages and types of cancer.

    Summary:

    • Nd-YAG laser vaporization achieved improved condition in 59.3% of tracheal and bronchial malignancies.
    • PRT, utilizing argon dye laser and HpD, demonstrated significant results in 170 cancer cases.

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  • Complete tumor remission was observed in 65.5% of early-stage cancers treated with PRT, notably in central lung cancers.
  • Local effects were achieved in all advanced cancer cases treated with PRT.
  • PRT showed potential in reducing surgical extent and widening surgical indications preoperatively.

    • Impact:

    • These findings suggest laser therapies, particularly PRT, are viable options for specific cancer treatments.
    • PRT offers a promising alternative or adjunct for early-stage cancers and palliative care in advanced stages.
    • Further research is needed to elucidate HpD activation mechanisms and refine PRT indications and patient selection criteria.