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Patient Home | PET and Cancer | Colorectal Cancer Contents:
IntroductionAccording to the American Cancer Society an estimated 112,340 colon and 41,420 rectal cancer cases are expected to occur in 2007. Early diagnosis of this disease is one of the key elements to its cure. Colorectal cancers probably develop slowly over a period of several years. Before a true cancer develops, there are often earlier changes in the lining of the colon or rectum. If found early, before colorectal cancer has spread, the disease is considered curable. However, as the tumor spreads to the lymph nodes, a patient's chance of living at least five years drops to 40 - 60%. If the cancer has already spread to distant organs, the long-term survival rate decreases substantially.
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