Related Experiment Videos
[Hypothyroidism after radiotherapy to the neck]
Eisaku Yoden1, Toshinori Soejima, Tsutomu Maruta
1Division of Radiology, Kobe University Graduate School of Medicine.
Summary
Neck radiotherapy can cause hypothyroidism. Radiation dose-volume factors, specifically V10, V20, and V30, significantly impact thyroid stimulating hormone levels, predicting hypothyroidism incidence.
Area of Science:
- Endocrinology
- Radiation Oncology
- Oncology
Context:
- Radiotherapy for neck cancers often involves the thyroid gland.
- Post-radiotherapy hypothyroidism is a known complication.
- Understanding predictors is crucial for patient management.
Purpose:
- To determine the incidence of hypothyroidism following neck radiotherapy.
- To identify radiation dose-volume factors predicting hypothyroidism.
- To analyze the impact of these factors on thyroid stimulating hormone (TSH) levels.
Summary:
- 169 patients treated with neck radiotherapy were assessed for thyroid function.
- Hypothyroidism (elevated TSH > 10.0 microU/ml) was diagnosed in 19.5% of patients.
- Radiation dose-volume metrics (V10, V20, V30) were significant predictors of hypothyroidism and peak TSH levels.
Impact:
- Findings suggest a correlation between thyroid radiation dose-volume factors and hypothyroidism incidence.
- Identifies specific dose thresholds (V10, V20, V30) impacting TSH levels.
- Informs strategies for optimizing radiotherapy planning to mitigate thyroid dysfunction.