Search US showed that although the majority of older women may not need to conduct a scan to detect breast cancer more than once every three years, but it is suffering from the density of the breast tissue may need to conduct this examination once a year.
It is well-known breast cancer risk factors, breast density is high, in the sense that breast contains little fat and a lot of fabric.
Among women aged between 50 and 74-year-old women has not increased deaths due to breast cancer among women who do not suffer from the disease factors, or the density of the breast tissue if underwent examination once every three years instead of once every two years.
But the researchers said in the journal (Ennals Of Medicine, Anturnal) that the annual scan of the women suffer from the density of the breast tissue and women who increased their risk of tumors associated with a lower deaths from breast cancer compared with screening every two years.
The report said doctors disagreed on the date and the number of times the routine screening for breast radiotherapy, which should be recommended by the women, despite the fact that these tests may save lives but sometimes women has been subjected to methods of treatment is unnecessary and painful.
Last year, the American Cancer Society revised its guidelines to urge women to begin annual breast cancer screening procedure, starting from the age of 45 years instead of 40 years and increase the duration to two years instead of once every year from the age of 55 years.
Breast cancer is the most common types of cancers that afflict women worldwide spread, and become one in every nine women with the disease, and heighten the risk with age and with a family history of the tumor.
Said Dr. Christine Berg of Johns Hopkins University in Baltimore, who wrote his publication of the study report, if an annual screening for women increases the risk of developing breast cancer better, regardless of the density of the breast tissue.
"It is difficult to monitor tumors with increasing density of the breast tissue, so it provides an annual scan to identify the precise monitoring of changes difficult."
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