If your doctor tells you that you have cystic lung disease, it means you have one of a group of conditions that cause lung cysts -- sacs of tissue filled with air or fluid. Treatments can help, but ...

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 ...

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 ...