lung cancer Essay -- essays research papers

LUNG CANCERLung genus Cancer is a carcinoma that develops in the epithelial cells that variance theinterior lining to the lungs. The airways get the al most(prenominal) exposure to inhaledpollutants, thus most people who get lung malignant neoplastic disease are smokers. Lung cancer is not middling one disease. there are many casefuls of cancer that form in the lungs most ofwhich you can only depict through a microscope. The most frequent cancer of the lungs is epidermoid. It is also known assquamous carcinoma because its cells look comparable a flat surface called a squamous cell. This cancer produces keratin, a fondness found in skin and hair, which can be seenin a tumor. Squamous carcinoma is more common in smokers because it developsin the bronchi and spreads by invading local tissues, than to the lymph nodes andinto the blood.Large - cell carcinoma is a tumor that is fairly larger than opposite types. Theydont form keratin but they are common in smokers. They develop in the central orperipheral divide of the lungs and the lymph glands. Small cell carcinoma tumors are small and fragile. They are divided intogroups by their shapes. The term oat cell carcinoma is used to develop insmokers and usually in the central part of the lung. They spread by the lymphglands and into the blood stream early. This type of tumors can only be seenthrough an electron microscope on gritty magnification. A rare type of lung cancer,which develops from hormone producing cells are carcinoid tumors. They hold back amuch less malignant course than small cell carcinoma. Lung cancer has been blamed on many factors but the most important issmoking. hummer is the main cause of lung cancer. The more often and longer asomebody smokes increases there chances of lung cancer. Cigarettes are supposed torelieve stress and depression, thirst and hunger. In reality they are only killinginside of you although you cant see it. Many people who have smoked for yearsfigure the wrongf ulness is already done so why quit. The risk of death from lung canceris related to the number of smoked cigarettes per day and the age the smokerstarted. There is only a small risk for non smokers to develop lung cancer. Although there is a risk of people who are around a lot of smokers from secondlyhand smoke. ... ...ave losta lot of weight or who have had prior radiotherapy are likely to respond poorly to medicine therapy.By unknown