Lung cancer is one of the most common and deadly types of cancer. It is a leading cause of death in men and women in the United States. Each year, more people die of lung cancer than of any other type of cancer.
Lung cancer occurs when abnormal cells grow out of control in the lungs. The lungs are two spongy organs in your chest that take in oxygen and release carbon dioxide.
Cancer happens when cells in the body begin to grow out of control. These abnormal cells can form tumors.
If the tumor is small and does not spread, it is called a localized tumor. If the tumor spreads to other parts of the body, it is called metastatic or advanced lung cancer.
There are two main types of lung cancer: non-small cell lung cancer (NSCLC) and small cell lung cancer (SCLC). NSCLC is the most common type of lung cancer. It accounts for about 85% of all lung cancers. SCLC is the less common type of lung cancer. It tends to grow and spread more quickly than NSCLC.
Lung cancer can be caused by smoking, exposure to secondhand smoke, exposure to certain chemicals and substances, and family history.
There are several symptoms of lung cancer, including a cough that does not go away, coughing up blood, shortness of breath, pain in the chest or back, weight loss, and fatigue.
Lung cancer is diagnosed through a variety of tests, including a physical exam, imaging tests, and a biopsy.
Treatment for lung cancer may include surgery, radiation therapy, chemotherapy, targeted therapy, and immunotherapy.
Lung cancer is a serious disease that can be deadly. However, it is important to remember that there are treatments available,