Podcast
Questions and Answers
What is the standard radiation treatment regimen after breast-conserving surgery?
What is the standard radiation treatment regimen after breast-conserving surgery?
- 3 fractions/week for 20 minutes over 8 weeks
- 3 fractions/week for 10 minutes over 7 weeks
- 5 fractions/week for 10 minutes over 5 weeks (correct)
- 5 fractions/week for 15 minutes over 10 weeks
Which of the following is NOT a characteristic of post-mastectomy radiation therapy?
Which of the following is NOT a characteristic of post-mastectomy radiation therapy?
- Consistently used regardless of tumor type (correct)
- Focus on irradiating the axillary lymph nodes
- Irradiation of lymphatic drainage pathways
- Effects positive for all patient subgroups
What is the purpose of increasing the local dose in the tumor bed during radiation treatment?
What is the purpose of increasing the local dose in the tumor bed during radiation treatment?
- To enhance cosmetic outcomes post-surgery
- To reduce the risk of recurrence (correct)
- To minimize overall treatment duration
- To alleviate skin reactions
What technique is used to safeguard the heart and lungs during radiation therapy?
What technique is used to safeguard the heart and lungs during radiation therapy?
What is the typical dosage used in radiation therapy for breast cancer?
What is the typical dosage used in radiation therapy for breast cancer?
Which factor is critical in determining the timing of adjuvant radiation therapy?
Which factor is critical in determining the timing of adjuvant radiation therapy?
What side effect is primarily associated with left-sided breast radiation?
What side effect is primarily associated with left-sided breast radiation?
Which of the following is a post-radiation effect that could occur in patients?
Which of the following is a post-radiation effect that could occur in patients?
What distinguishes hypo-fractionated radiation therapy from conventional therapy?
What distinguishes hypo-fractionated radiation therapy from conventional therapy?
Side effects such as late fibrosis and telangiectasia are primarily categorized as which type of effects?
Side effects such as late fibrosis and telangiectasia are primarily categorized as which type of effects?
Flashcards
Radiation Therapy for Breast Cancer
Radiation Therapy for Breast Cancer
A common treatment for breast cancer, often used after surgery to reduce the chance of recurrence.
Adjuvant Radiation
Adjuvant Radiation
Radiation therapy given after surgery to treat breast cancer.
Breast-Conserving Surgery (BCS)
Breast-Conserving Surgery (BCS)
Surgical removal of breast cancer without removing the entire breast.
Boosting (radiation)
Boosting (radiation)
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Post-Mastectomy Radiation
Post-Mastectomy Radiation
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Lymph Node Radiation
Lymph Node Radiation
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3D-Radiation Therapy
3D-Radiation Therapy
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Intensity-Modulated Radiation Therapy
Intensity-Modulated Radiation Therapy
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Hypo-fractionated Radiation
Hypo-fractionated Radiation
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Radiation Side Effects
Radiation Side Effects
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Study Notes
Mammographic Cancer Radiation Therapy
- Radiation therapy (RT) is commonly used for breast cancer, especially in conjunction with other treatments like chemotherapy.
- Post-mastectomy RT can be considered, especially for T3 tumors or nodal involvement.
- RT aims to reduce lymph node and distant metastases, aiming for overall survival.
- Axillary lymph node irradiation is frequently performed to reduce recurrence.
- Deep inspiration breath holds (DIBH) are used to limit lung and heart exposure during RT.
- 3D conformal techniques and intensity-modulated radiation therapy (IMRT) are modern techniques.
- Standard RT schedules are 5x/week for 5 weeks, potentially with hypofractionated regimens (3 weeks).
- Adjusting the treatment plan is necessary depending on adjuvant therapies, such as chemotherapy or hormonal treatments.
- Some treatment regimens involve a fast schedule (90% of patients), primarily adjuvant radiation.
- Post-operative evaluation (biopsy and scans) is performed before initiating radiation.
- The extent of the radiation depends on the findings of other diagnostics (e.g., pre-operative CT or MRI)
Treatment Considerations
- Toxicity considerations, particularly for younger patients or those with children.
- Re-radiation regimens are considered for recurrent disease in select cases. Young women with children may be treated with less intensive radiation.
- Adjustments are made based on the patient's overall health.
- Patient tolerance to treatment factors in dose and schedule.
Potential Side Effects
- Mild toxicity is generally expected.
- Skin reactions, nausea, and fatigue are potential side effects.
- Long-term pulmonary toxicity risks, including fibrosis and pneumonia, are possible.
- Cardiovascular issues, such as coronary heart disease or heart rhythm disturbances, are potential secondary effects.
- Risk of secondary cancers (particularly lung cancer).
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