For decades the only true weapon against colon cancer has been surgery. If the scalpel could take out the entire tumor, the patient was cured; if not, the cancer recurred. But now, for the first time, researchers have developed a drug therapy that may reduce the high death rate from this form of cancer, which kills 53,500 Americans each year and is the third most common type of malignancy.
In a series of studies coordinated by Dr. Charles Moertel of the Mayo Clinic in Rochester, Minn., researchers tested a combination of two drugs: 5- fluorouracil, a proven anticancer agent, and levamisole,...
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