Mesothelioma Navy Mesothelioma Navy Advanced Practice 3 — Questions and Answers
Question 1: Which shipboard location was commonly called the 'hot spots' for asbestos exposure due to the density of insulated steam lines?
- Engine room and fire room (Correct answer)
- Navigation bridge
- Mess hall
- Communications center
Correct answer: Engine room and fire room
Engine rooms and fire rooms contained densely packed steam lines covered with asbestos insulation, making them the most hazardous areas for fiber release.
Question 2: Which immunotherapy drug combination received FDA approval specifically for unresectable pleural mesothelioma as a first-line treatment?
- Nivolumab plus ipilimumab (Correct answer)
- Pembrolizumab plus cisplatin
- Atezolizumab plus bevacizumab
- Durvalumab plus tremelimumab
Correct answer: Nivolumab plus ipilimumab
The CheckMate 743 trial led to FDA approval of nivolumab plus ipilimumab for unresectable pleural mesothelioma in 2020.
Question 3: A veteran who served on a submarine from 1955 to 1975 files for VA disability. Why is submarine service particularly relevant to asbestos exposure claims?
- Submarines had extremely confined spaces with extensive asbestos insulation and no ventilation to dilute airborne fibers (Correct answer)
- Submarines used nuclear propulsion which activated asbestos fibers
- Submarine crews were never issued protective equipment
- Submarine service required handling of asbestos gaskets daily as part of diving procedures
Correct answer: Submarines had extremely confined spaces with extensive asbestos insulation and no ventilation to dilute airborne fibers
The enclosed, unventilated environment of submarines dramatically concentrated airborne asbestos fibers released from insulation and pipe coverings.
Question 4: Which type of mesothelioma carries the best prognosis with the longest median survival compared to other cell types?
- Epithelioid (Correct answer)
- Sarcomatoid
- Biphasic
- Desmoplastic
Correct answer: Epithelioid
Epithelioid mesothelioma responds better to treatment and has longer median survival than sarcomatoid or biphasic subtypes.
Question 5: What does the military occupational specialty code (MOS or rating) of 'Hull Maintenance Technician (HT)' indicate about asbestos exposure risk?
- HTs repaired ship hulls and structural components, frequently cutting and disturbing asbestos-containing materials (Correct answer)
- HTs worked exclusively above deck in open-air conditions
- HTs handled only electrical systems with minimal asbestos contact
- HTs were classified as low-risk because they wore full PPE at all times
Correct answer: HTs repaired ship hulls and structural components, frequently cutting and disturbing asbestos-containing materials
Hull Maintenance Technicians regularly cut, welded, and repaired ship structures lined with asbestos materials, creating heavy fiber release.
Question 6: Why is a tissue biopsy considered the gold standard for diagnosing mesothelioma rather than imaging alone?
- Imaging cannot distinguish mesothelioma from other cancers or benign conditions without histological confirmation (Correct answer)
- Biopsies are faster and less expensive than CT scans
- Blood tests for mesothelioma are 100% accurate and replace imaging
- PET scans are banned for mesothelioma diagnosis by the FDA
Correct answer: Imaging cannot distinguish mesothelioma from other cancers or benign conditions without histological confirmation
Mesothelioma shares imaging characteristics with lung cancer and other pleural diseases, so tissue analysis is required for definitive diagnosis.
Question 7: The Feres doctrine prevents active-duty service members from suing the U.S. government for service-related injuries. How does this affect mesothelioma claims?
- Veterans must pursue VA benefits and asbestos trust funds rather than suing the government directly for asbestos exposure (Correct answer)
- Veterans can sue the Navy directly under the Feres exception for toxic exposures
- The Feres doctrine was repealed for asbestos cases in 2010
- Veterans may sue the government only if exposure occurred after discharge
Correct answer: Veterans must pursue VA benefits and asbestos trust funds rather than suing the government directly for asbestos exposure
The Feres doctrine bars direct lawsuits against the military, so veterans with mesothelioma typically rely on VA claims and manufacturer trust funds.
Mesothelioma Navy Mesothelioma Navy Advanced Practice 3
Which shipboard location was commonly called the 'hot spots' for asbestos exposure due to the density of insulated steam lines?