Lung cancer arises in tissues of the lung, usually in the cells lining air passages. The two main types are small-cell lung cancer and non-small-cell lung cancer, according to the shape of cells under ...

If you have trouble breathing, your doctor may recommend a few tests to figure out what’s causing it. Some measure how much air you breathe in or out or how much oxygen is going from your lungs to the ...

Lindsay Curtis is a health & medical writer in South Florida. She worked as a communications professional for health nonprofits and the University of Toronto’s Faculty of Medicine and Faculty of ...