Major Warning Signs of Lung Cancer

Lung cancer is a form of cancer that begins in the lung cells. Adenocarcinoma, non-small cell lung cancer, begins in the glandular cells on the outside of the lung, and small-cell cancer (e.g. small cell carcinoma) starts in the cells lining the bronchi. Lung cancer, while it begins in the lungs, can metastasize, which means it can spread to other parts of the body.

Each year, more men and women die from lung cancer than breast, colon, and prostate cancer combined. It is a highly fatal disease, with hundreds of thousands of new cases being diagnosed each year. It's critical to recognize the early warning signs of lung cancer in order to intervene appropriately.