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Updated: Jul 7, 2026
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Voluntary Breath-hold Technique for Reducing Heart Dose in Left Breast Radiotherapy
Published on: July 3, 2014
Summary
Lung irradiation can cause radiation pneumonitis and fibrosis, affecting up to 10% of patients. Severity depends on radiation volume and dose rate, with chemotherapy and steroid withdrawal worsening outcomes.
Area of Science:
- Pulmonary Medicine
- Radiation Oncology
- Radiology
Background:
- Lung irradiation can lead to significant histologic and clinical sequelae.
- The effects are related to radiation dose, volume, and rate.
- Understanding these effects is crucial for patient management.
Purpose of the Study:
- To review the cellular effects of lung irradiation.
- To describe the clinical syndrome of radiation pneumonitis and fibrosis.
- To discuss exacerbating factors and management strategies.
Main Methods:
- Semiquantitative analysis of damage occurrence and severity.
- Clinical observation of patient outcomes post-radiation therapy.
- Review of pulmonary function and radiographic changes.
Main Results:
- Radiation pneumonitis occurs in up to 10% of patients, typically 6-12 weeks post-therapy.
- This acute phase is followed by progression to radiation fibrosis over 6-12 months.
- Concomitant chemotherapy, repeat radiation, and steroid withdrawal exacerbate lung damage.
Conclusions:
- Lung irradiation induces a predictable sequence of acute pneumonitis and chronic fibrosis.
- Patient outcomes are influenced by radiation parameters and combined treatments.
- Careful monitoring and management are essential to mitigate lung damage.
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