lung cancer Essay -- essays research papers

LUNG CANCERLung pubic louse is a carcinoma that develops in the epithelial cells that bounce theinterior lining to the lungs. The airways come up the most exposure to inhaledpollutants, thus most people who get lung crabby person be smokers. Lung cancer is notjust one disease. There argon umteen characters of cancer that form in the lungs most ofwhich you can moreover see through a microscope. The most common cancer of the lungs is epidermoid. It is to a fault known assquamous carcinoma because its cells look like a flat coat called a squamous cell. This cancer produces keratin, a substance found in disrobe and hair, which can be seenin a tumor. Squamous carcinoma is more common in smokers because it developsin the bronchi and diffuses by invading local tissues, than to the lymph nodes andinto the blood.Large - cell carcinoma is a tumor that is fairly larger than other types. Theydont form keratin but they argon common in smokers. They develop in the central orperipheral part of the lungs and the lymph glands. Small cell carcinoma tumors atomic number 18 sharp and fragile. They are divided intogroups by their shapes. The term oat cell carcinoma is use 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 high magnification. A rare type of lung cancer,which develops from hormone producing cells are carcinoid tumors. They have got amuch less cancerous course than small cell carcinoma. Lung cancer has been blamed on many factors but the most important issmoking. Smoking is the main cause of lung cancer. The more often and longer aperson smokes increases there chances of lung cancer. Cigarettes are suppositional torelieve stress and depression, thirst and hunger. In reality they are only killinginside of you although you cant see it. Many people who have smoke-dried for yearsfigure the damage is alread y 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 secondhand smoke. ... ...ave losta lot of weight or who have had prior radiotherapy are likely to respond poorly todrug therapy.By unknown