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://tasneemppqc054785.gigswiki.com/5854815/mesothelioma_vs_non_small_cell_lung_cancer_understanding_the_difference