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News
New technology detects breast
cancer earlier
By SARA KINCAID/Bismarck Tribune May 21, 2007
A gammagram is a type of breast imaging based on
PET scan technology, which uses radioactive isotopes. The isotope attaches to
mitochondria, which concentrate around tumors and other anomalies.
Medcenter One began using the gammagram technology in June 2006. Women have a
gammagram when they have a negative mammogram but there's reasonable cause
that there could be a tumor. St. Alexius Medical Center also is using new
technology to detect breast cancer.
Consequently, Medcenter One is detecting more cancerous tumors and at an
earlier stage for women with dense breast tissue. Prior to this technology,
they averaged 71/2 tumors for every 1,000 mammograms. Now they average 15
tumors for ever 1,000 mammograms. The federal guidelines want radiologists to
average two to 10 finds per 1,000 mammograms. Yearly, they perform 6,000
mammograms.
"The dense tissues are hiding tumors we don't know are there," he
said.
Decrease in Breast
Cancer Rates Related to Reduction in Use of Hormone Replacement Therapy
Information
courtesy National Cancer Institute (NCI) Posted: 04/18/2007
The sharp decline in the rate of new breast cancer
cases in 2003 may be related to a national decline in the use of hormone
replacement therapy (HRT), according to a new report in the April 19, 2007,
issue of the New England Journal of Medicine. The report used data from the
Surveillance, Epidemiology and End Results (SEER) program of the National
Cancer Institute (NCI), part of the National Institutes of Health.
Age-adjusted breast cancer incidence rates in women in the United States
fell 6.7 percent in 2003. During this same period, prescriptions for HRT
declined rapidly, following highly-publicized reports from the Women’s
Health Initiative (WHI) study that showed an increased risk of breast cancer,
heart disease, stroke, blood clots, and urinary incontinence among
postmenopausal women who were using hormone replacement therapy that included
both estrogen and progestin. The two most commonly prescribed forms of HRT in
the United States, Premarin® and PremproTM, had their steepest declines
starting in 2002-2003 -- from 61 million prescriptions written in 2001 to 21
million in 2004.
Led by senior investigator Donald Berry, PhD., of the University of Texas
M.D. Anderson Cancer Center, Houston,
Texas, the research team showed
that the decrease in breast cancer incidence began in mid-2002 and leveled off
after 2003. Comparing rates from 2001 and 2004 showed a decrease in annual
age-adjusted incidence of 8.6 percent. The decrease occurred only in women
over the age of 50 and was more evident in women with cancers that were
estrogen receptor (ER) positive -- tumors that need estrogen in order to grow
and multiply. The speed at which breast cancer rates declined after the WHI
announcements may indicate that extremely small ER-positive breast cancers
may have stopped progressing, or even regressed, after HRT was stopped.
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2007 ©
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