While both mesothelioma and non-small cell lung cancer (NSCLC) can present as serious respiratory illnesses, they have distinct causes. Mesothelioma is a rare disease that arises from the membrane of the lungs' pleura. https://heidimbpg551285.wikiap.com/1717830/mesothelioma_vs_non_small_cell_lung_cancer_understanding_the_difference