Although lung cancer is the leading cause of cancer death in the U.S. in both men and women, it is also one of the most preventable kinds of cancer. At least four out of five cases are associated with cigarette smoking, and the cause-and-effect relationship has been extensively documented. During the 1920s, large numbers of men began to smoke cigarettes, presumably in response to increased advertising. Twenty years later, the frequency of lung cancer in men climbed sharply. In the 1940s, significantly...
1. Adenocarcinoma starts in cells in your air sacs that make mucus and other substances, often in the outer parts of your lungs. It's the most common kind of lung cancer among both smokers and nonsmokers and people under 45. It often grows more slowly than other lung cancers.
2. Squamous cell (epidermoid) carcinoma starts in cells that line the inner airways of the lungs. About a quarter of lung cancers are this kind.
3. Large cell (undifferentiated) carcinoma grows and spreads more quickly. That can make it tougher to treat. It's about 10% to 15% of lung cancers.
The treatments your doctor suggests will depend on how far your cancer has spread.
Doctors aren't sure exactly what causes this disease. Many people who get it have smoked or been around smoke. Other things that make lung cancer more likely are:
Radon, a radioactive gas found naturally in soil and rocks