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://esmeexaqd434195.tnpwiki.com/7035037/differentiating_mesothelioma_and_non_small_cell_lung_cancer