Mesothelioma Therapy Assessment — Questions and Answers

Question 1: What is the most common histological subtype of mesothelioma?

Desmoplastic
Biphasic (mixed)
Epithelioid (Correct answer)
Sarcomatoid

Correct answer: Epithelioid

Epithelioid mesothelioma is the most common histological subtype, accounting for approximately 50-70% of all cases, and carries the most favorable prognosis.

Question 2: In the trimodality therapy approach for mesothelioma, what is the correct order of treatments?

Surgery → Radiation → Chemotherapy
Chemotherapy → Surgery → Radiation (Correct answer)
Radiation → Surgery → Chemotherapy
Surgery → Chemotherapy → Radiation

Correct answer: Chemotherapy → Surgery → Radiation

The classic trimodality approach is chemotherapy (neoadjuvant) → EPP (surgery) → radiation therapy to the hemithorax.

Question 3: What is the primary goal of palliative care in mesothelioma?

Eliminating cancer cells
Curative treatment
Replacing all active treatments
Improving quality of life and managing symptoms (Correct answer)

Correct answer: Improving quality of life and managing symptoms

Palliative care focuses on improving quality of life by managing symptoms, pain, and psychosocial distress rather than achieving cure.

Question 4: Which imaging modality is preferred for radiation treatment planning in mesothelioma?

4D-CT simulation scan (Correct answer)
Standard chest X-ray
PET scan only
Standard MRI without contrast

Correct answer: 4D-CT simulation scan

4D-CT simulation accounts for respiratory motion, which is critical for accurately delineating pleural targets during radiation planning.

Question 5: Palliative radiation for mesothelioma chest wall pain is typically given over what time frame?

4–6 weeks
1–2 weeks (short course) (Correct answer)
1–2 days
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 6: Stage IV mesothelioma is characterized by which feature?

Cancer in regional lymph nodes only
Cancer spread to distant organs or tissues (Correct answer)
No lymph node involvement
Cancer confined to the pleura

Correct answer: Cancer spread to distant organs or tissues

Stage IV mesothelioma indicates distant metastasis, meaning the cancer has spread to organs or tissues far from its origin.

Question 7: Advance care planning for mesothelioma patients should include documentation of:

Chemotherapy dose adjustments
Insurance information only
Goals of care, resuscitation preferences, and healthcare proxy designation (Correct answer)
Only dietary preferences

Correct answer: Goals of care, resuscitation preferences, and healthcare proxy designation

Advance care planning documents a patient's treatment goals, resuscitation wishes (DNR/DNI), and healthcare proxy, guiding care when the patient cannot speak for themselves.

Question 8: What total radiation dose is typically used for adjuvant hemithoracic radiotherapy after EPP?

20–30 Gy
45–54 Gy (Correct answer)
70–80 Gy
10–15 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 9: What is pemetrexed's primary mechanism of action?

Antifolate—inhibits multiple folate-dependent enzymes (Correct answer)
Microtubule stabilization
DNA alkylation
Topoisomerase inhibition

Correct answer: Antifolate—inhibits multiple folate-dependent enzymes

Pemetrexed is an antifolate agent that inhibits multiple folate-dependent enzymes essential for DNA synthesis, thereby halting cancer cell replication.

Question 10: Which type of mesothelioma is most commonly diagnosed in the United States?

Testicular mesothelioma
Pleural mesothelioma (Correct answer)
Peritoneal mesothelioma
Pericardial mesothelioma

Correct answer: Pleural mesothelioma

Pleural mesothelioma, affecting the lining of the lungs, accounts for approximately 75% of all mesothelioma cases in the US.

Question 11: What is the typical number of cycles for first-line pemetrexed + cisplatin chemotherapy in mesothelioma?

4–6 cycles (Correct answer)
8–10 cycles
12 cycles
2–3 cycles

Correct answer: 4–6 cycles

Standard first-line chemotherapy for mesothelioma typically consists of 4–6 cycles of pemetrexed + cisplatin.

Question 12: Ipilimumab targets which immune checkpoint?

LAG-3
PD-1
CTLA-4 (Correct answer)
PD-L1

Correct answer: CTLA-4

Ipilimumab is a CTLA-4 inhibitor that blocks this immune checkpoint, enhancing T-cell activation and anti-tumor immune responses.

Question 13: Which non-pharmacological intervention is effective for reducing dyspnea in mesothelioma?

Deep tissue massage of the chest
Hot compresses
Increased dietary protein
A handheld fan directed at the face (Correct answer)

Correct answer: A handheld fan directed at the face

A handheld fan directed at the face activates facial cold receptors that modulate the central perception of dyspnea, providing meaningful relief.

Question 14: Which adjuvant analgesic class is particularly useful for neuropathic pain in mesothelioma chest wall invasion?

Proton pump inhibitors
Beta-blockers
Gabapentinoids (gabapentin, pregabalin) (Correct answer)
Antihistamines

Correct answer: Gabapentinoids (gabapentin, pregabalin)

Gabapentinoids are effective adjuvant analgesics for neuropathic pain resulting from nerve compression or invasion by mesothelioma.

Question 15: According to the WHO pain ladder, which drug class is appropriate for severe cancer pain unresponsive to non-opioids?

NSAIDs
Anticonvulsants alone
Weak opioids (codeine)
Strong opioids (morphine, oxycodone) (Correct answer)

Correct answer: Strong opioids (morphine, oxycodone)

Step 3 of the WHO pain ladder recommends strong opioids such as morphine or oxycodone for severe pain unresponsive to weaker analgesics.

Question 16: Which targeted mutation makes some mesothelioma patients potentially eligible for PARP inhibitor therapy?

EGFR mutation
ALK rearrangement
KRAS mutation
BAP1 mutation (loss of function) (Correct answer)

Correct answer: BAP1 mutation (loss of function)

Loss-of-function mutations in BAP1 may create a homologous recombination deficiency, potentially sensitizing tumors to PARP inhibitors.

Question 17: What does 'R0 resection' mean in the context of mesothelioma surgery?

Removal of only visible macroscopic disease
Palliative debulking
Removal of regional lymph nodes only
Complete resection with no microscopic residual disease (Correct answer)

Correct answer: Complete resection with no microscopic residual disease

R0 resection means complete surgical removal with no microscopic residual disease at the margins, the goal of curative surgery.

Question 18: Which surgery is considered the most aggressive and potentially curative procedure for pleural mesothelioma?

Pleurectomy/Decortication (P/D)
Video-Assisted Thoracoscopic Surgery (VATS)
Extrapleural Pneumonectomy (EPP) (Correct answer)
Debulking surgery

Correct answer: Extrapleural Pneumonectomy (EPP)

Extrapleural Pneumonectomy (EPP) is the most aggressive surgery, involving removal of the affected lung, pleura, diaphragm, and pericardium.

Question 19: What is pleurodesis used for in mesothelioma management?

Preventing recurrent pleural effusion (Correct answer)
Staging the cancer
Delivering chemotherapy to the pleura
Removing the tumor entirely

Correct answer: Preventing recurrent pleural effusion

Pleurodesis is a palliative procedure used to prevent recurrent pleural effusion by causing the pleural layers to adhere together.

Question 20: What is the main advantage of P/D over EPP?

Shorter operation time
More complete lymph node removal
Preservation of the lung and better quality of life (Correct answer)
Lower recurrence rates

Correct answer: Preservation of the lung and better quality of life

P/D preserves the lung, generally resulting in better postoperative quality of life and lower mortality risk compared to EPP.

Question 21: Which multidisciplinary team member plays the primary role in identifying and addressing functional decline and fatigue in mesothelioma patients?

Radiation oncologist
Medical oncologist
Thoracic surgeon
Occupational therapist (Correct answer)

Correct answer: Occupational therapist

Occupational therapists assess functional limitations and implement strategies to help mesothelioma patients maintain independence and manage cancer-related fatigue.

Question 22: Tumor Treating Fields (TTFields) therapy is approved in the US for mesothelioma in combination with which treatment?

Immunotherapy only
Radiation therapy alone
Surgery alone
Pemetrexed + platinum chemotherapy (Correct answer)

Correct answer: Pemetrexed + platinum chemotherapy

TTFields (NovoTTF-100L) received FDA approval in combination with pemetrexed + platinum chemotherapy for unresectable pleural mesothelioma.

Question 23: Which serum biomarker may be used to monitor response to immunotherapy in mesothelioma?

Soluble mesothelin-related peptides (SMRP) (Correct answer)
PSA
CA 19-9
AFP

Correct answer: Soluble mesothelin-related peptides (SMRP)

Soluble mesothelin-related peptides (SMRP) is a serum biomarker that may be useful in monitoring treatment response in mesothelioma patients.

Question 24: What is the median survival time for Stage IV pleural mesothelioma without treatment?

4–6 months (Correct answer)
12–18 months
24–36 months
1–3 months

Correct answer: 4–6 months

Without treatment, Stage IV pleural mesothelioma has a median survival of approximately 4–6 months.

Question 25: Which symptom is most commonly managed by palliative care in mesothelioma patients?

Nausea from chemotherapy only
Dyspnea and chest pain (Correct answer)
Constipation
Hair loss

Correct answer: Dyspnea and chest pain

Dyspnea (shortness of breath) and chest pain are the most prevalent and distressing symptoms in mesothelioma, forming the core of palliative management.

Question 26: What does HIPEC stand for in peritoneal mesothelioma treatment?

High-Intensity Perioperative Electrochemotherapy
Hepatic Infusion Peritoneal Electrochemotherapy
Heated Intravenous Peritoneal Chemotherapy
Hyperthermic Intraperitoneal Chemotherapy (Correct answer)

Correct answer: Hyperthermic Intraperitoneal Chemotherapy

HIPEC stands for Hyperthermic Intraperitoneal Chemotherapy, where heated chemotherapy drugs are circulated directly in the abdominal cavity during surgery.

Question 27: Proton beam therapy is being studied in mesothelioma because it offers:

Higher maximum dose
Lower entry dose and no exit dose, sparing nearby structures (Correct answer)
Faster treatment course
Resistance to radioresistance

Correct answer: Lower entry dose and no exit dose, sparing nearby structures

Proton therapy deposits its peak energy at the tumor (Bragg peak) with minimal exit dose, reducing radiation to surrounding healthy tissues.

Question 28: Which minimally invasive surgical approach is used for peritoneal mesothelioma diagnosis and staging?

Thoracotomy
Laparoscopy (Correct answer)
Open laparotomy
Mediastinoscopy

Correct answer: Laparoscopy

Laparoscopy allows minimally invasive visualization and biopsy of peritoneal surfaces for diagnosis and staging of peritoneal mesothelioma.

Question 29: Radiation-induced pneumonitis is a major concern in mesothelioma patients. What is its hallmark symptom?

Hemoptysis
Fever and chills only
New or worsening cough and dyspnea (Correct answer)
Chest pain

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 30: The SMART (Surgery for Mesothelioma After Radiation Therapy) protocol delivers radiation in which sequence?

After surgery
During surgery (intraoperative)
Before surgery (neoadjuvant) (Correct answer)
Concurrent with chemotherapy only

Correct answer: Before surgery (neoadjuvant)

The SMART protocol delivers high-dose hemithoracic radiation before EPP surgery (neoadjuvant), aiming to sterilize tumor cells prior to resection.

Question 31: Avelumab differs from nivolumab and pembrolizumab in that it targets:

PD-1 on T cells
PD-L1 on tumor cells (Correct answer)
VEGF in circulation
CTLA-4 on T cells

Correct answer: PD-L1 on tumor cells

Avelumab is an anti-PD-L1 antibody that targets the PD-L1 ligand on tumor cells, rather than the PD-1 receptor on T cells.

Mesothelioma Therapy Assessment

A clinical knowledge assessment covering the primary treatment modalities for malignant mesothelioma, including surgical options, chemotherapy protocols, radiation therapy, and palliative/pain management care for healthcare professionals.

100

Questions

120 min

Time Limit

70%

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