CXR shows calcified bilateral pleural plaques. This finding is most strongly associated with exposure to which substance?

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Multiple Choice

CXR shows calcified bilateral pleural plaques. This finding is most strongly associated with exposure to which substance?

Calcified bilateral pleural plaques on a chest X-ray are a classic marker of asbestos exposure. When asbestos fibers are inhaled, they can cause fibrous thickening of the pleura, especially on the diaphragmatic and lateral chest walls; over time these plaques may calcify. This finding strongly points to asbestos as the exposure source and also signals the possibility of related conditions such as asbestosis or mesothelioma, even though the plaques themselves are often asymptomatic. Other exposures produce different radiographic patterns. Silica exposure commonly causes upper-lobe nodular fibrosis and characteristic “eggshell” calcifications of lymph nodes. Coal dust leads to coal workers’ pneumoconiosis with coal-laden nodules in the lungs. Beryllium exposure causes noncaseating granulomas resembling sarcoidosis.

Calcified bilateral pleural plaques on a chest X-ray are a classic marker of asbestos exposure. When asbestos fibers are inhaled, they can cause fibrous thickening of the pleura, especially on the diaphragmatic and lateral chest walls; over time these plaques may calcify. This finding strongly points to asbestos as the exposure source and also signals the possibility of related conditions such as asbestosis or mesothelioma, even though the plaques themselves are often asymptomatic.

Other exposures produce different radiographic patterns. Silica exposure commonly causes upper-lobe nodular fibrosis and characteristic “eggshell” calcifications of lymph nodes. Coal dust leads to coal workers’ pneumoconiosis with coal-laden nodules in the lungs. Beryllium exposure causes noncaseating granulomas resembling sarcoidosis.

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