Lung cancer is a type of cancer that begins in the lungs. Your lungs are two spongy organs in your chest that take in oxygen when you inhale and release carbon dioxide when you exhale. 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 the number of cigarettes you've smoked.
- Track 1-1 Squamous cell carcinomas
- Track 2-2 Large cell carcinoma
- Track 3-3 Undifferentiated non-small cell lung cancer
- Track 4-4 Adenocarcinomas