Monday, March 23, 2009


Lung cancer is a disease of uncontrolled cell growth in tissues of the lung. This growth may lead to metastasis, which is the invasion of adjacent tissue and infiltration beyond the lungs. The vast majority of primary lung cancers are carcinomas of the lung, derived from epithelial cells. Lung cancer, the most common cause of cancer-related death in men and the second most common in women (after breast cancer) is responsible for million deaths worldwide annually. The most common symptoms are shortness of breath, coughing (including coughing out blood), and weight loss.
The main types of lung cancer are small cell lung carcinoma and non-small cell lung carcinoma. This distinction is important, because the treatment varies; non-small cell lung carcinoma (NSCLC) is sometimes treated with surgery, while small cell lung carcinoma (SCLC) usually responds better to chemotherapy and radiation. The most common cause of lung cancer is long-term exposure to tobacco smoke. The occurrence of lung cancer in nonsmokers, who account for as many as 15% of cases, is often attributed to a combination of genetic factor, radon gas, asbestos and air pollution, including secondhand smoke.
Sign and symptoms sometimes seen in lung cancer:
· A cough that doesn't go away and gets worse over time
· Chest pain that doesn't go away
· Coughing up blood
· Feeling short of breath
· Wheezing
· Losing your voice (hoarseness)
· Getting sick with pneumonia and bronchitis a lot
· Swollen neck and face
· Not hungry, losing weight without trying
· Feeling tired
People with these symptoms could have lung cancer, or it could be something else. If you have these symptoms, your best bet is to see your family physician. The doctor can say for sure what's causing the symptoms and how to treat them.

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