Which asbestos related disease is not related to smoking and is associated with the smallest fibers?

Which asbestos related disease is not related to smoking and is associated with the smallest fibers?

• A. Asbestosis
• B. Mesothelioma
• C. Lung cancer
• D. Pleural plaques

Answer: (B)

Mesothelioma is driven by asbestos exposure itself, not by smoking. Smoking greatly increases the risk of lung cancer in people exposed to asbestos, but it does not cause mesothelioma. This disease tends to be associated with the most respirable, finer asbestos fibers that can penetrate deep into the lungs and reach the pleural lining, where malignant transformation of mesothelial cells can occur over many years. In contrast, asbestosis results from high fiber burdens in the lung tissue and is a fibrotic lung disease; pleural plaques are benign scarring associated with exposure; and lung cancer risk is strongly linked to smoking (even more so when asbestos exposure is present). So the disease that best fits “not related to smoking and associated with the smallest fibers” is the one that arises from asbestos exposure itself and can involve the deepest, finest fibers reaching the pleura.

Mesothelioma is driven by asbestos exposure itself, not by smoking. Smoking greatly increases the risk of lung cancer in people exposed to asbestos, but it does not cause mesothelioma. This disease tends to be associated with the most respirable, finer asbestos fibers that can penetrate deep into the lungs and reach the pleural lining, where malignant transformation of mesothelial cells can occur over many years.

In contrast, asbestosis results from high fiber burdens in the lung tissue and is a fibrotic lung disease; pleural plaques are benign scarring associated with exposure; and lung cancer risk is strongly linked to smoking (even more so when asbestos exposure is present). So the disease that best fits “not related to smoking and associated with the smallest fibers” is the one that arises from asbestos exposure itself and can involve the deepest, finest fibers reaching the pleura.