While both mesothelioma and non-small cell lung cancer (NSCLC) can present as serious respiratory illnesses, they have distinct causes. Mesothelioma is a rare cancer that arises from the surface of the lungs' pleura. https://matteovnee591441.wikifrontier.com/8371069/differentiating_mesothelioma_and_non_small_cell_lung_cancer