Lung Cancer

Cancer and Neoplasms, Respiratory

Lung cancer is the uncontrolled cell growth in the tissues of the lung that develop into a malignant tumor. There are two main types, small cell lung cancer (SCLC) and non-small cell lung cancer (NSCLC).  Lung cancer was rare before cigarette smoking existed. Now, it is the second most common cancer in people and is the leading cause of death due to cancer in the United States (25% of all cases). In 2021, the American Cancer Society estimates that there will be about 235,760 new cases of lung cancer diagnosed in the United States. The survival rate for lung cancer is better with early diagnosis and treatment. Lung cancer usually occurs in older people and is most common in smokers and former smokers. The more and longer you have smoked, the higher the risk. After quitting smoking, the risk lowers. Lung cancer is treatable if caught early and the risk of death from lung cancer goes up if treatment is delayed.

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