Mesothelioma Therapy Radiation Therapy 2 — Questions and Answers
Question 1: Radiation-induced pneumonitis is a major concern in mesothelioma patients. What is its hallmark symptom?
- Chest pain
- New or worsening cough and dyspnea (Correct answer)
- Fever and chills only
- Hemoptysis
Correct answer: New or worsening cough and dyspnea
New or worsening cough and dyspnea appearing 4–12 weeks after radiation completion are the hallmark symptoms of radiation-induced pneumonitis.
Question 2: Which phase of the trimodality treatment approach typically includes adjuvant hemithoracic radiotherapy?
- Before chemotherapy
- Before surgery
- After EPP surgery (Correct answer)
- During HIPEC
Correct answer: After EPP surgery
In trimodality therapy, hemithoracic radiotherapy is delivered adjuvantly after EPP surgery as the third and final phase.
Question 3: What total radiation dose is typically used for adjuvant hemithoracic radiotherapy after EPP?
- 10–15 Gy
- 20–30 Gy
- 45–54 Gy (Correct answer)
- 70–80 Gy
Correct answer: 45–54 Gy
Adjuvant hemithoracic radiation after EPP typically delivers 45–54 Gy to the treated hemithorax to reduce local recurrence.
Question 4: Palliative radiation for mesothelioma chest wall pain is typically given over what time frame?
- 1–2 days
- 1–2 weeks (short course) (Correct answer)
- 4–6 weeks
- 8–10 weeks
Correct answer: 1–2 weeks (short course)
Palliative radiation for pain relief is commonly delivered as a short course of 1–2 weeks, balancing symptom control with patient convenience.
Question 5: Which radiation complication can occur when significant cardiac dose is received during mesothelioma treatment?
- Radiation hepatitis
- Radiation-induced pericarditis or cardiac toxicity (Correct answer)
- Radiation nephritis
- Radiation myelitis
Correct answer: Radiation-induced pericarditis or cardiac toxicity
Radiation to the cardiac region can cause pericarditis, pericardial effusion, or other cardiac toxicities in mesothelioma patients.
Question 6: For mesothelioma patients who undergo P/D (lung-sparing surgery), what challenge does this create for adjuvant radiation?
- No challenge—radiation is straightforward
- The remaining lung limits deliverable dose, increasing pneumonitis risk (Correct answer)
- The surgical scar blocks radiation delivery
- Radiation cannot be used after P/D
Correct answer: The remaining lung limits deliverable dose, increasing pneumonitis risk
After P/D, the ipsilateral lung remains in place, limiting the dose that can be safely delivered due to pneumonitis risk.
Mesothelioma Therapy Radiation Therapy 2
Radiation-induced pneumonitis is a major concern in mesothelioma patients.
What is its hallmark symptom?