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What is a mammogram? What benefits does a woman get from a screening mammogram
Mammography is the process of using low-energy-X-rays (usually around 30 kVp) to examine the human breast and is used as a diagnostic and a screening tool. [ The goal of mammography is the early detection of breast cancer, typically through detection of characteristic masses and/or microcalcifications. Most doctors believe that mammography reduces deaths from breast cancer, although a minority do not ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Women whose breast cancer was detected by screening mammography before the appearance of a lump or other symptoms commonly assume that the mammogram
"saved their lives".[13] In practice, the vast majority of these women received no practical benefit from the mammogram. There are four categories of cancers found by mammography: cancers that are so easily treated that a later detection would have produced the same total cure (woman would have lived even without mammography); cancers so aggressive that even "early" detection is too late (woman dies despite detection by mammography); cancers that would have receded on their own or are so slow-growing that the woman would die of other causes before the cancer produces symptoms (mammography results in overdiagnosis and overtreatment of this class); and the small number of breast cancers that are detected by screening mammography and whose treatment outcome improves as a result of earlier detection. Only between 3% and 13% of breast cancers detected by screening mammography will fall into this last category. Clinical trial data suggests that 1 woman per 1,000 healthy women screened over 10 years fall into this category as well.[14] Screening mammography produces no benefit to any of the remaining 87% to 97% of women. ]
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Asked 5/6/2012 11:57:47 AM
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What do our cells do with these amino acids
Weegy: The problem with amino acids is that they deteriorate. The body will store extra starch and protein as fat, to use later. Amino acids are not stored, but they can be replaced. [ There are upwards of twenty different kinds of amino acids that form proteins. Some of these the body makes. The ones it cannot make, called the essential amino acids, it must get from constant consumption of food.These amino acids cannot be synthesized in the human body on its own and must be taken as part of the diet. All proteins are not created equal. Quality of proteins is determined by the body’s ability–or lack of ability–to make use of them. There are eight essential amino acids needed to form a human protein molecule. Without each of them, a human protein molecule cannot be constructed. Even if only one of the amino acids is missing and all others are present in great quantity, protein construction is impossible in a human body. One amino acid cannot be substituted for another and the human body is incapable of manufacturing essential amino acids on its own. It is imperative that all of these eight protein molecules be brought in through food. The 8 essential amino acids are Isoleucine, Leucine, Lysine, Methionine, Phenylalanine, Threonine, Tryptophan and Valine. ] (More)
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