Define "mesothelioma."

Mesothelioma is a rare form of cancer that is primarily associated with exposure to asbestos. This cancer typically affects the mesothelium, which is the lining of various organs in the body, most commonly the lungs, heart, and abdomen. The unique factor that sets mesothelioma apart from other cancers is its direct link to asbestos exposure, a mineral that was widely used in construction and industrial applications until its dangers were better understood.

Understanding why mesothelioma is classified as rare and associated with asbestos is crucial. While other types of lung-related conditions can arise from exposure to various irritants or pathogens, mesothelioma specifically connects to the inhalation of asbestos fibers. This distinguishes it from common lung infections, chronic diseases, or conditions related to smoking, which have different etiologies and health implications. Therefore, recognizing mesothelioma as a type of cancer linked to asbestos exposure is essential in the context of health and safety regulations, particularly in industries where asbestos was prevalent.