A new study finds that the size of newly diagnosed breast cancers has shifted towards smaller tumors, even within conventional cancer stage categories, and that this shift accounts for a proportion of the improvement seen in breast cancer survival over the last 30 years. The authors of the report say that failure to account for this shift in tumor size can lead to overestimation of the impact of treatment advances. The study is published in the September 15, 2005 issue of CANCER, a peer-reviewed journal of the American Cancer Society.
Great strides in breast cancer survival have been made over the last 30 years, overall and within cancer stages, coinciding with advances in treatment and with increased use of screening mammography. However, if important prognostic factors have also changed over time, then observed improvements in breast cancer survival may be a result of such changes and of improvements in treatment. The authors studied changes in tumor size because it is a strong predictor of breast cancer prognosis and it is a straightforward, reliably evaluated, consistently available measure.
Elena B. Elkin, Ph.D. of the Memorial Sloan-Kettering Cancer Center in New York and her colleagues reviewed data on early-stage breast cancers from the Surveillance, Epidemiology and End Results (SEER) program to look for trends in tumor size and explore how those trends might impact survival rates. SEER is a population-based cancer registry system that collects and monitors data on cancers diagnosed in certain areas of the U.S.
David Greenberg | EurekAlert!
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University of Maryland researchers contribute to historic detection of gravitational waves and light created by event
On August 17, 2017, at 12:41:04 UTC, scientists made the first direct observation of a merger between two neutron stars--the dense, collapsed cores that remain...
Seven new papers describe the first-ever detection of light from a gravitational wave source. The event, caused by two neutron stars colliding and merging together, was dubbed GW170817 because it sent ripples through space-time that reached Earth on 2017 August 17. Around the world, hundreds of excited astronomers mobilized quickly and were able to observe the event using numerous telescopes, providing a wealth of new data.
Previous detections of gravitational waves have all involved the merger of two black holes, a feat that won the 2017 Nobel Prize in Physics earlier this month....
Material defects in end products can quickly result in failures in many areas of industry, and have a massive impact on the safe use of their products. This is why, in the field of quality assurance, intelligent, nondestructive sensor systems play a key role. They allow testing components and parts in a rapid and cost-efficient manner without destroying the actual product or changing its surface. Experts from the Fraunhofer IZFP in Saarbrücken will be presenting two exhibits at the Blechexpo in Stuttgart from 7–10 November 2017 that allow fast, reliable, and automated characterization of materials and detection of defects (Hall 5, Booth 5306).
When quality testing uses time-consuming destructive test methods, it can result in enormous costs due to damaging or destroying the products. And given that...
Using a new cooling technique MPQ scientists succeed at observing collisions in a dense beam of cold and slow dipolar molecules.
How do chemical reactions proceed at extremely low temperatures? The answer requires the investigation of molecular samples that are cold, dense, and slow at...
Scientists from the Max Planck Institute of Quantum Optics, using high precision laser spectroscopy of atomic hydrogen, confirm the surprisingly small value of the proton radius determined from muonic hydrogen.
It was one of the breakthroughs of the year 2010: Laser spectroscopy of muonic hydrogen resulted in a value for the proton charge radius that was significantly...
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