While both mesothelioma and non-small cell lung cancer (NSCLC) can present as serious respiratory illnesses, they have distinct origins. Mesothelioma is a rare disease that arises from the lining of the lungs' pleura. https://mattierjpg128972.blogsumer.com/35890333/differentiating-mesothelioma-and-non-small-cell-lung-cancer