Lung cancer usually starts as a cough or shortness of breath. Chest pains follow; more signs and symptoms come. Each year, lung cancer kills 1.3 million people, making it the most common cause of cancer-related death. There are two main categories: non-small-cell and small-cell carcinoma and several types of lung cancer, each having its own characteristics.
From early warning signs to stage IV bronchioloalveolar carcinoma, the following article features the causes, symptoms, types, and stages of lung cancer.
Causes and risk factors
- High levels of air pollution;
- Arsenic in drinking water;
- Radon gas;
- Exposure to cancer-causing chemicals like uranium, coal products, gasoline and diesel exhaust.
Non-small-cell lung carcinoma
Large-cell lung carcinoma
Small-cell lung carcinoma
Stages of cancer
- Stage 0: Cancer is only present in the cells where it formed.
- Stage I: Cancer has grown but has not metastasized.
- Stage II, III: While still local to its origin, the cancer is spreading and possibly affecting other organs nearby.
- Stage IV: Cancer has fully metastasized and spread to other organs throughout the body.
Review Date: January 19, 2017 | Last Modified: January 19, 2017
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Lung Cancer – Non-Small Cell. (2012). American Cancer Society. http://www.cancer.org/cancer/lungcancer-non-smallcell/index. Accessed January 19, 2017.
Lung Cancer – Small Cell. (2012). American Cancer Society. http://www.cancer.org/cancer/lungcancer-smallcell/index. Accessed January 19, 2017.