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...replacement therapy but fear that the estrogen in HRT will increase their risk of breast cancer. The jury is still out, but here's some reassurance. A study of 37,000 women found little evidence that estrogen is linked to common types of cancers such as ductal carcinoma in situ (a cancer confined to a duct). It may, however, increase some uncommon forms--but they are slow growing and may be easily treatable...
MARGIN OF SAFETY For years, doctors have tried to spare women from having a mastectomy for ductal carcinoma in situ, a noninvasive form of breast cancer. Instead, they cut out only the cancerous cells and then irradiate the breast. Now a major report shows that women may be able to avoid radiation too--as long as doctors remove a 1/2-in. margin of tissue along with the problem cells. That sure beats getting zapped, which is expensive, time consuming and may make future mammograms difficult to read...
...quickly as a supermarket scanner prices a load of groceries. In some systems, the probes use different fluorescent dyes that glow under laser light when they hook up with target genes, allowing sensors to tabulate the results automatically. Genetic researchers are already talking about using "FISH [for fluorescent in-situ hybridization] and chips," as they whimsically call these new tools, to look for any number of genetic characteristics, including the more elusive web of genes that may lurk behind familial patterns of heart disease and stroke, cancer, diabetes, Alzheimer's, various kinds of mental disorders and even gingivitis. Says...
...that reason, I was appalled to read in Mark Thompson's story "The Gulf War Poisons Seep Out" that U.S. Army Engineers "blew up" nerve-gas-weapons depots in Iraq in 1991. Who made the decision to risk blowing up the chemical and biological ammunition in situ? Was the risk factor properly appraised, not only with regard to allied troops temporarily present in the vicinity of the destruction site but also with regard to the Iraqi civilian population? If "blowing up" is a correct description of what happened, and if even minute quantities of nerve gas can be a severe...
...California physician has developed a new diagnostic method for treating some breast cancer tumors. Dr. Melvin Silverstein, a surgical oncologist, announced a system Wednesday that could prevent excessive treatments that many women now undergo. The process assigns points to three characteristics of the common DCIS (for ductal carcinoma in situ) tumors. The tumor's final "score" determines whether it can be safely ignored, removed, or treated with radiation or a mastectomy. Now, tumors are often treated too aggressively with radiation or breast removal that may be unnecessary. "Right now we do not know which tumors are going to develop into...