While both mesothelioma and non-small cell lung cancer (NSCLC) can present as serious respiratory illnesses, they have distinct origins. Mesothelioma is a rare cancer that arises from the membrane of the lungs' pleura. https://janicelyfi179882.wikiusnews.com/1706307/differentiating_mesothelioma_and_non_small_cell_lung_cancer