Except for women in their 40s, women who are screened with mammography every 2 years may not have an increased risk of late-stage breast cancer compared with women screened every year, according to a new study in the December 15 issue of the Journal of the National Cancer Institute.
The ideal interval between screenings for breast cancer using mammography has not been determined. In the United States, the U.S. Preventive Services Task Force recommends screening with mammography every 1 to 2 years, whereas the American Cancer Society recommends annual screening. In Europe, most countries recommend that women be screened every 2 years and concentrate their recommendations on women age 50 and older.
To determine if women screened every 2 years have an increased risk of late-stage breast cancer, Emily White, Ph.D., of the Fred Hutchinson Cancer Research Center in Seattle, and colleagues conducted an observational study using data collected by seven mammography registries in the United States. They examined whether the 2,440 women who had been diagnosed with breast cancer after receiving biennial screening were more likely to have been diagnosed with late-stage cancer compared with 5,400 women diagnosed with breast cancer after receiving annual screening.
Sarah L. Zielinski | EurekAlert!
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Physicists of the University of Würzburg have made an astonishing discovery in a specific type of topological insulators. The effect is due to the structure of the materials used. The researchers have now published their work in the journal Science.
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In recent years, lasers with ultrashort pulses (USP) down to the femtosecond range have become established on an industrial scale. They could advance some applications with the much-lauded “cold ablation” – if that meant they would then achieve more throughput. A new generation of process engineering that will address this issue in particular will be discussed at the “4th UKP Workshop – Ultrafast Laser Technology” in April 2017.
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A multi-institutional research collaboration has created a novel approach for fabricating three-dimensional micro-optics through the shape-defined formation of porous silicon (PSi), with broad impacts in integrated optoelectronics, imaging, and photovoltaics.
Working with colleagues at Stanford and The Dow Chemical Company, researchers at the University of Illinois at Urbana-Champaign fabricated 3-D birefringent...
In experiments with magnetic atoms conducted at extremely low temperatures, scientists have demonstrated a unique phase of matter: The atoms form a new type of quantum liquid or quantum droplet state. These so called quantum droplets may preserve their form in absence of external confinement because of quantum effects. The joint team of experimental physicists from Innsbruck and theoretical physicists from Hannover report on their findings in the journal Physical Review X.
“Our Quantum droplets are in the gas phase but they still drop like a rock,” explains experimental physicist Francesca Ferlaino when talking about the...
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