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Related Experiment Videos

External beam radiotherapy for differentiated thyroid cancer.

Kenyon M Meadows1, Robert J Amdur, Christopher G Morris

  • 1Department of Radiation Oncology, University of Florida College of Medicine, Gainesville, FL, USA.

American Journal of Otolaryngology
|December 20, 2005
PubMed
Summary

External beam radiation therapy (EBRT) improves local-regional control for differentiated thyroid cancer patients. This treatment offers significant survival benefits for those with advanced or recurrent disease.

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Area of Science:

  • Oncology
  • Radiation Oncology

Background:

  • Differentiated thyroid carcinomas can present as locally advanced or recurrent disease.
  • External beam radiation therapy (EBRT) is a treatment modality for various cancers.

Purpose of the Study:

  • To evaluate the efficacy of external beam radiation therapy (EBRT) in managing differentiated thyroid carcinomas.

Main Methods:

  • A cohort of 42 patients with locally advanced or recurrent differentiated thyroid carcinoma received high-dose EBRT.
  • Patient data included local-regional disease status (macroscopic vs. microscopic) and prior treatment.
  • Radiation doses and patient outcomes were analyzed.

Main Results:

  • The 5-year local-regional control rates were 88% overall and 89% for patients without distant metastases.

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  • Cause-specific survival at 5 years was 80% overall and 86% for those without distant metastases.
  • Improved local-regional control was observed with microscopic residual disease, previously untreated tumors, and doses exceeding 64 Gy.

    • Conclusions:

    • External beam radiation therapy (EBRT) significantly enhances local-regional control in patients with locally advanced differentiated thyroid carcinoma.
    • EBRT is an effective treatment option for improving outcomes in select thyroid cancer patients.