It could be benign (non-cancerous ... For example, you might have a tumor in your breast, but under the microscope the cells appear to be lung cancer cells. That means the cancer started in ...

One of the reasons for this high mortality is the early symptoms of lung cancer are fairly benign, often being little more than a persistent wheeze or cough, breathlessness and listlessness.

Although various diagnostic methods differentiate lung cancer malignancy from benign disease ... its diagnostic value through circulating tumor DNA (ctDNA) remains unrealized in lung cancer.