Mesothelioma Therapy Types and Staging of Mesothelioma 1 — Questions and Answers
Question 1: Which type of mesothelioma is most commonly diagnosed in the United States?
- Pleural mesothelioma (Correct answer)
- Peritoneal mesothelioma
- Pericardial mesothelioma
- Testicular 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 2: What is the primary known cause of mesothelioma?
- Smoking
- Asbestos exposure (Correct answer)
- Radiation exposure
- Chemical exposure
Correct answer: Asbestos exposure
Asbestos exposure is the primary known cause of mesothelioma, responsible for the vast majority of cases.
Question 3: Which staging system is most commonly used for pleural mesothelioma in the US?
- TNM staging system
- Brigham staging system
- Butchart staging system
- All of the above (Correct answer)
Correct answer: All of the above
All three staging systems—TNM, Brigham, and Butchart—are used for pleural mesothelioma, though the TNM system is most widely adopted.
Question 4: In the TNM staging system, what does Stage I mesothelioma indicate?
- Cancer has spread to distant organs
- Cancer is localized to the pleura on one side (Correct answer)
- Cancer has invaded lymph nodes
- Cancer affects both sides of the chest
Correct answer: Cancer is localized to the pleura on one side
Stage I mesothelioma indicates the cancer is localized to the pleura on one side of the chest without lymph node involvement.
Question 5: Which cell type of mesothelioma generally has the best prognosis?
- Sarcomatoid
- Biphasic
- Epithelioid (Correct answer)
- Mixed
Correct answer: Epithelioid
Epithelioid mesothelioma has the best prognosis because these cells respond better to treatment than sarcomatoid cells.
Question 6: What is the average latency period between asbestos exposure and mesothelioma diagnosis?
- 5–10 years
- 10–20 years
- 20–50 years (Correct answer)
- 50–70 years
Correct answer: 20–50 years
Mesothelioma typically develops 20–50 years after initial asbestos exposure, making early diagnosis challenging.
Mesothelioma Therapy Types and Staging of Mesothelioma 1
Which type of mesothelioma is most commonly diagnosed in the United States?