Part 1 of Essay
“ is an uncontrolled, extremely deadly division of cells in the lung” (World Book, “”). The two major types of include small and non-small cell. Many different risk factors contribute to . There are numerous symptoms that are difficult to detect in the early stages of . Doctors use special mach ....

Part 2 of Essay
.... (World Book, “”). In the United States 85 to 90 percent of all cases are related to smoking. Cigarette smoking is the main cause of (Scientific American, “”). Second-hand smoke, inhaled by non-smokers, increases a person’s chance of acquiring (Beau Halton). Men who smoke increase their chance of dying from about 23 times and women increase their chances 13 times (“ Awareness Campaign,” 3/23/99). However, may also be caused by long term exposure to radon, a ....