Lung cancer is a type of cancer that begins in the lungs. Lung cancer is the leading cause of cancer deaths worldwide.

People who smoke have the greatest risk of lung cancer, though lung cancer can also occur in people who have never smoked. The risk of lung cancer increases with the length of time and number of cigarettes you've smoked. If you quit smoking, even after smoking for many years, you can significantly reduce your chances of developing lung cancer.

Lung cancer typically doesn't cause signs and symptoms in its earliest stages. Signs and symptoms of lung cancer typically occur when the disease is advanced.

Signs and symptoms of lung cancer may include:

●             A cough that doesn’t go away or gets worse over time.

●             Shortness of breath (dyspnea).

●             Chest pain or discomfort.

●             Coughing up blood (hemoptysis).

●             Hoarseness of voice.

●             Unexplained weight loss.

●             Swelling in the face, neck, arms or upper chest (superior vena cava syndrome).

·           Make an appointment with your doctor if you have any persistent signs or symptoms that worry you.

If you smoke and have been unable to quit, make an appointment with your doctor. Your doctor can recommend strategies for quitting smoking, such as counseling, medications, and nicotine replacement products