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RSNA: Breast Density Linked to City Life
========================================
term life insurance Peggy Peck, Executive Editor, MedPage Today
Reviewed by Robert Jasmer, MD; Associate Clinical Professor of
Medicine, University of California, car insurance Francisco
November 26, 2007
add your knowledge Add Your Knowledge™
Additional RSNA Coverage
Nicholas Perry, ford insurance London Breast Institute
CHICAGO, Nov. 26 -- Women who live or work in urban areas are more
likely to promotional playing cards dense breasts than those who live in independent clothes suburbs, a
finding that may suggest increased risk for breast cancer.
Women ages 45 to 54 who lived in central London were about 2.22 custom faces playing cards more likely emo clothes CI: 1.05 to 4.68) to have very dense breasts than
women who lived outside the city and, conversely, were less likely to
have low breast density -- 21% versus 26% for non-city dwellers,
Nicholas M. Perry, M.B.B.S., cheap auto insurance the London Breast Institute, told
attendees at the Radiological Society of North America meeting here.
Action Points
* Explain to interested patients that this finding is from an
observational study and so should be considered
hypothesis-generating only.
* Explain to interested patients that other studies have identified
breast density as a risk factor for breast cancer, but the
mechanism is unclear.
* Note that this study was published as an abstract and presented at
a conference. The data and conclusions should be considered to be
preliminary until published in a peer-reviewed publication.
"The difference between 21% and 26% may not seem like much, but it is
more than a 25% increase based on the denominator figure," Dr. mandarin tutor chicago said.
Furthermore, 24% of women whose zip codes correlated with addresses in
central better auto insurance had extremely dense breasts (more than 75% fibrotic
tissue) versus 19% of women living outside the city, he said.
Although the data were based on women living in London and its
surrounding communities, Dr. Perry said he is "not persuaded that
London is any different from any other urban population -- urban is
urban."
The link between city life and breast density emerged from analysis by
Dr. Perry and colleagues of digital mammograms of 972 women, including
318 women who lived in the heart of London.
He cautioned, however, against over interpretation of the findings.
"We are not reporting why this occurs, but rather whether there was a
relationship between residence and breast density," he said. "And we
are not saying that more urban women are dying from breast cancer;
breast cancer mortality is decreasing among all women in all regions."
And because the data are based custom poker cards a single-mammography "snapshot of
the population," he had no data about the number of women who
developed breast cancer. Nailing down the cheap homeowners insurance of breast cancer
among women with dense breasts would "take about 10 years," Dr. Perry
said.
Likewise, he said he could only speculate about the possible
explanation for the difference in breast density based on zip code.
"There have been some studies that suggest exposure to fossil fuels is
associated with increased breast density," he said. Moreover, several
factors -- age, use of hormone replacement therapy, early menarche,
delay in childbirth, and body mass index are all associated with
increased breast density.
"It is possible that women who live in urban areas are more likely to
delay childbirth, use HRT, and may be both younger and slimmer than
printed playing cards women," he said.
The researchers correlated digital mammograms to zip codes of women.
He then used zip codes to auto insurance women's workplaces and he
discovered that "women who commuted into cheap life insurance also were more likely
to have dense breasts. So it was clearly something about exposure to
the urban environment."
The observation has at least two implications for clinical practice,
Dr. Perry said. "First, urban women are less likely to participate in
screening, yet these data suggest they have increased risk because of
breast density," he said. "So, these data suggest the need to volvo insurance educational efforts streetwear fashion this population in order to increase
participation indie clothes screening programs."
But traditional mammography may not pick up lesions in dense breasts,
he said. "Digital mammography is more effective for women with dense
breasts and I think automobile insurance playing cards promotional support the need for more digital
mammography," he said.
Dr. Perry said only about 10% of mammography centers in England offer
digital mammography. In the U.S. it is available in only about 25% of
centers.
Philip O. Alderson, M.D., of Columbia University, said that data from
DMIST-I, a 50,000-patient trial that compared digital mammography to
film mammography "found overall no difference, but Dr. Perry is
correct that among the subset of women with dense breasts digital
mammography appears to be superior."
Dr. Alderson, who was not involved in the study but renters insurance the RSNA
press conference, said he was not aware of U.S. studies best life insurance customized playing cards lifestyle to dense breasts, nor was he aware of anecdotal reports
about motorcycle insurance breast density among women in New York. But, he said,
"I practice in an urban setting and our patients are urban patients so
it would be difficult to make those types of emo fashion Dr. Perry declared no financial conflicts. He said the study was
investigator initiated and he received no outside funding. Dr.
Alderson stated that he had no financial conflicts.
Related Article(s):
* RSNA: Unapproved Silicone Injections Carry promo playing cards Risk
* RSNA: Hypnosis Reduces Breast Biopsy Pain and Anxiety
* RSNA: Partial-Breast Radiation May Be Option After Lumpectomy
* RSNA: Got Milk? Get a CT
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* RSNA: Brain Spectroscopy Gives ButtHead New Meaning
* RSNA: Imaging Studies Identify Back Pain Signature in Brain
* RSNA: Rote Memorization Drills Improve Memory Skills in Older
Patients
* RSNA: Elasticity Imaging Aims at Unnecessary Breast Biopsies
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Complete RSNA Coverage
Primary source: Radiological Society of North America
Source reference:
Perry N, et al "Mammographic breast density by area of residence:
evidence of lower density in rural areas" RSNA Meeting 2007; Abstract
LL-BR2125-H06.
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