Many patients both men and women die due to Lung cancer and is very common cause to death and it ranks second to breast cancer. People in the age group of 45 and 70 may get affected by this. The main cause of lung cancer is smoking cigarettes. Lung cancer begins in lung and so called Lung Cancer. The origin of lung cancer is cells of lungs and this stage is called primary lung cancer. It may spread from other parts of body also. The cancer like Metastatic may spread to lung from colon, breast, prostate, kidney, thyroid gland, stomach, rectum, cervix, testis, skin and bone. Most of the of primary lung cancer is in bronchi and such type of cancer is called bronchogenic carcinoma.
There are two types of lung cancer, one of them is Small Cell Cancer (SCLC) and other is Non-Small Cell Lung Cancer (NSCLC).
Some of the causes of Lung Cancer are:
Cigarette smoking is one of the main causes of lung cancer. Both men and women are affected by lung cancer. The risk of developing lung cancer depends on duration and quantity of smoking. There are some other causes or substances that cause lung cancer such as arsenic, radiation, nickel, chromates, mustard gas, chloromethyl ethers, coke-oven emissions and working with asbestos. People facing or exposing these substances are under great possibility to lung cancer. A minor per centage of lung cancer is caused by air pollution. Lung cancer in less than 1% is caused by the exposure to radon gas in home. People suffering from other lung diseases like tuberculosis and fibrosis may suffer from lung cancer like adenocarcinoma and alveolar cell carcinoma.