Cancer
According to Mollet, cancer is the second leading cause of death in the United States. Estimates for 1982 indicate that 430,000 Americans will have died of some form of cancer. If national trends continue, some fifty-three million Americans now alive will contract cancer sometime during their lifetime. Of this inverse number, approximately one-half will die of cancer despite a medical effort to cure and prevent cancer Although 45 percent of the detected cases of serious cancer are curable, an increase of 5 percent in the last ten years, it is obvious that measures can be taken to increase the cure rate and also prevent onset of various Clark suggested that several types of cancer have cure rates that could improve by detection and treatment at an early stage before "regional involvement" occurs; that is before the disease spreads to lympnodes systems in the area of the original tumor. After cancerous cell have dispersed into other regions of the body, the control or termination of cancer is made more difficult, if not impossible (56). The Most Prevalent Cancers and Their Causes. Effects, and Cures.According to Miller, lung cancer was first clearly described about 150 years ago and a
Knowledge gained in the discipline of human cancer genetics reflects a growing consensus about how particular cancer-causing genes contribute to the overall frequency of cancer in the general population. cancer risk can be viewed as a contributor of genetic susceptibility and environmental forces. With about 115,000 new cases each year (150). The quality and length of life for patients with lung cancer have been improved by increased understanding of the biology of the disease and the valuable information, even the form of negative results, obtained from experimental programs (15). At present half of these patients can expect to be cured, a figure that could be greatly improved by more diligent attention to established methods of screening for bowel cancer (341). This examination is easily performed and, while it may be embarrassing for the patients, it involves no discomfort. even in the form of negative results, obtained from experimental treatment programs. This technique has several advantages over a surgical biopsy. According to Brown, approximately 138,000 Americans develop cancer of the large bowel- the lowermost portion of the gastrointestinal tract, which is made up of the colon and rectum. Although this procedure can not always ensure early detection of the disease, it remains the most effective test. At the time of a digital rectal examination, a sample is taken for chemical testing for occult or hidden blood. Testicular cancer is most among men between the ages of fifteen and thirty four. The quality and length of life for patients with cancer have been improved by increased understanding of the biology of the disease and valuable information. t the turn of the century this disease was still considered a rarity. The majority of men with prostate cancer, however, have no symptoms at all, which is why routine rectal digital examination are ultimately found to be cancer.
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