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Radiotherapy for prostate carcinoma.

K Leonard, J A Stryker

    Journal of Surgical Oncology
    |September 1, 1986
    PubMed
    Summary
    This summary is machine-generated.

    External beam radiation for prostate cancer shows high survival rates, with survival decreasing in later stages. Higher radiation doses increased complications, while interstitial implants had none.

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    Area of Science:

    • Oncology
    • Radiation Oncology
    • Urologic Oncology

    Background:

    • Prostate carcinoma is a significant health concern.
    • Radiotherapy is a primary treatment modality for prostate cancer.
    • Optimizing radiotherapy techniques is crucial for improving patient outcomes.

    Purpose of the Study:

    • To evaluate the 4-year no evidence of disease (NED) survival rates based on different doses of external beam radiation (EBR) and treatment types for prostatic carcinoma.
    • To analyze the incidence and severity of bowel or urinary complications associated with varying EBR doses and interstitial implants.

    Main Methods:

    • Retrospective review of 96 patients with prostatic carcinoma treated with radiotherapy.
    • Analysis of 4-year NED survival rates across different stages (A, B, C, D1) and radiation doses (6,500-7,000 rad EBR).

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  • Comparison of survival and complication rates between EBR and interstitial implants for stage B patients.

    • Main Results:

    • 4-year NED survival rates for EBR ranged from 92% (Stage A) to 50% (Stage D1) with doses between 6,500 and 7,000 rad.
    • For Stage B, 4-year NED survival was 90% with ~6,500 rad EBR, 75% with ~7,000 rad EBR, and 71% with interstitial implants.
    • Complication rates for EBR were 27% (~6,500 rad) and 40% (~7,000 rad), with 0% for interstitial implants.

    Conclusions:

    • External beam radiation demonstrates effective 4-year NED survival for prostate cancer across stages, though rates decrease with advanced disease.
    • Higher doses of EBR (~7,000 rad) are associated with increased bowel/urinary complications compared to lower doses (~6,500 rad).
    • Interstitial implants show a promising alternative with no observed complications in this cohort, warranting further investigation.