## Why Bronchogenic carcinoma is right Asbestosis (structure **C**) characteristically affects the lower lobes and produces pleural plaques with ferruginous bodies on histology. While malignant mesothelioma is pathognomonic of asbestos exposure, bronchogenic carcinoma is the MOST COMMON malignancy associated with asbestos exposure. The risk is further multiplied in smokers, making this the highest-frequency cancer complication in asbestos-exposed workers. This distinction is critical in occupational pathology: mesothelioma is rare in the general population but diagnostic of asbestos exposure, whereas bronchogenic carcinoma is far more frequent in asbestos workers (Robbins 10e, Ch 15). ## Why each distractor is wrong - **Malignant mesothelioma**: While pathognomonic of asbestos exposure and a serious complication, it is RARE in the general population and NOT the most common malignancy. Mesothelioma occurs even with brief or low-level exposure, but bronchogenic carcinoma is statistically more frequent. - **Small cell lung cancer**: There is no specific association between asbestos exposure and small cell histology. The lower lobe involvement shown in structure **C** is a feature of asbestosis distribution, not a predictor of small cell type. - **Adenocarcinoma of the pleura**: This is not a recognized entity distinct from mesothelioma. Adenocarcinoma of the lung (bronchogenic) can occur, but pleural adenocarcinoma is not a standard classification and is unrelated to asbestos pathology. **High-Yield:** Asbestosis → lower lobes + pleural plaques + ferruginous bodies; most common cancer = bronchogenic carcinoma (especially in smokers); mesothelioma is rare but pathognomonic. [cite: Robbins 10e Ch 15; Harrison 21e Ch 286]
Sign up free to access AI-powered MCQ practice with detailed explanations and adaptive learning.