Lung cancer is the third most common cancer in the United States. Each year, about 225,000 people in the country are diagnosed. Doctors classify lung cancer into types depending on the way cancer ...

Like COVID-19, both acute and chronic types of bronchitis can affect your respiratory tract. Can having bronchitis put you at higher risk for complications if you contract the new coronavirus? And are ...

Lung cancer occurs when cells inside the lungs grow out of control. The cancer can start in the bronchi, the tubes that allow air to move from the trachea into the lungs; bronchioles, the tiny tubes ...