Lung cancer is a form of very rapid development of cells (abnormal) in lung tissue caused by changes in tissue form cells or the expansion of the cells themselves. If left unchecked this abnormal growth can be spread to other organs, both near and far to the lung such as bone, liver, or brain.
Lung cancer caused by smoking more (87%), while the remainder are caused by the substance of asbestos, radiation, arsenic, chromate, nickel, chloromethyl ethers, mustard gas and coke oven emissions can cause lung cancer, although usually only occurs on workers who also smoke.
There is a classification of lung cancer, is viewed from both dijaringan lung diffusion rate itself or to other organs. But basically the lung cancer is divided into two criteria based on the level of distribution:
Primary Lung Cancer
Have two main types, namely Small cell of this cancer (SCLC) and non-small cell lung cancer (NSCLC). SCLC is the kind that sell small pieces (many) which has its very rapid growth to swell. Usually called "oat cell carcinomas" (wheat cell carcinoma). This type is closely associated with smokers, Handling responds well enough through the action of chemotherapy and radiation therapy.
While the growth of NSCLC cells is a single, but often strike more than one area in the lung. For example adenoma, hamartoma kondromatous and Sarcoma.
Secondary Lung Cancer
Lung cancer is a disease that arises as a result of the spread of cancer from other organs, most often breast cancer and colon cancer (stomach). Cancer spreads through the blood, lymphatic system or because of the proximity of the organ. articles about Lung Cancer
Source: http://newdianribut.blogspot.com/2011/09/lung-cancer-definition-and.html
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