Study examines outcomes of screening mammography for age, breast density, hormone therapy
A study that compared the benefits and harms of the frequency of screening mammography to age, breast density and postmenopausal use of hormone therapy (HT) suggests that woman ages 50 to 74 years who undergo biennial screenings have a similar risk of advanced-stage disease and a lower cumulative risk of false-positive results than those who get mammograms annually, according to a report published Online First by JAMA Internal Medicine.
In 2009, the U.S. Preventive Services Task Force issues guidelines that biennial mammography, rather than the previously recommended mammography every one to two years, be performed for women ages 50 to 74, but the updated guidelines did not consider the influence of breast cancer risk factors beyond age, according to the study background.
Karla Kerlikowske, M.D., of the University of California, San Francisco, and colleagues sought to determine whether the benefits, such as early detection, and the harms, such as a false-positive mammography result or biopsy recommendation, differ among women undergoing screening mammography according to age, breast density and postmenopausal HT use.
Researchers analyzed data collected from January 1994 to December 2008 from mammography facilities in community practice that participate in the Breast Cancer Surveillance Consortium (BCSC) mammography registries. Data were collected from 11,474 women with breast cancer and 922,624 without breast cancer.
The authors found that biennial vs. annual mammography for women ages 50 to 74 was not associated with an increased risk of advanced-stage or large-size tumors regardless of a women's breast density or HT use. However, the results indicate that among women ages 40 to 49 years with extremely dense breasts, biennial mammography vs. annual was associated with an increased risk of advanced-stage cancer (odds ratio [OR], 1.89) and large tumors (OR, 2.39).
Study results also show that the cumulative probability of a false-positive mammography result was high among women undergoing annual mammography with extremely dense breasts who were either ages 40 to 49 years (65.5 percent) or used estrogen plus progestogen (65.8 percent) and was lower among women ages 50 to 74 years who underwent biennial or triennial mammography with scattered fibroglandular densities or fatty breasts.
"In conclusion, women aged 50 to 74 years, regardless of breast density or HT use, can undergo biennial rather than annual mammography because biennial screening does not increase the risk of presenting with advanced disease but does substantially reduce the cumulative risk of a false-positive mammography result and biopsy recommendation. Women aged 40 to 49 years with extremely dense breasts who choose to undergo mammography should consider annual screening to decrease the risk of advanced-stage disease but should be informed that annual screening leads to a high cumulative probability of a false-positive mammography result because of the additional screening examinations," the study concludes.
More information: JAMA Intern Med. Published online March 18, 2013. doi:10.1001/jamainternmed.2013.307
Journal reference: JAMA Internal Medicine
Provided by The JAMA Network Journals
- High rate of false-positives with annual mammogram Oct 17, 2011 | not rated yet | 0
- Digital mammography superior to film mammography in some cases Jan 29, 2008 | not rated yet | 0
- Adding ultrasound to mammography may improve breast cancer detection in high-risk women May 13, 2008 | not rated yet | 0
- ACR, SBI support updated ACOG recommendations that women begin annual mammograms at age 40 Jul 20, 2011 | not rated yet | 0
- Annual mammography with screening ultrasound may benefit women at increased risk of breast cancer Apr 03, 2012 | not rated yet | 0
- Motion perception revisited: High Phi effect challenges established motion perception assumptions Apr 23, 2013 | 3 / 5 (2) | 2
- Anything you can do I can do better: Neuromolecular foundations of the superiority illusion (Update) Apr 02, 2013 | 4.5 / 5 (11) | 5
- The visual system as economist: Neural resource allocation in visual adaptation Mar 30, 2013 | 5 / 5 (2) | 9
- Separate lives: Neuronal and organismal lifespans decoupled Mar 27, 2013 | 4.9 / 5 (8) | 0
- Sizing things up: The evolutionary neurobiology of scale invariance Feb 28, 2013 | 4.8 / 5 (10) | 14
Why is zone 1 in liver more prone to ischemic injury?
4 hours ago Hi, Is it because around central vein, there is only deoxygenated blood from the vein where as in the periphery there is hepatic artery. Also why...
How can there be villous adenoma in colon, if there are no villi there
May 22, 2013 As title suggest. Thanks :smile:
How can there be a term called "intestinal metaplasia" of stomach
May 21, 2013 Hello everyone, Ok Stomach's normal epithelium is simple columnar, now in intestinal type of adenocarcinoma of stomach it undergoes "intestinal...
Pressure-volume curve: Elastic Recoil Pressure don't make sense
May 18, 2013 From pressure-volume curve of the lung and chest wall (attached photo), I don't understand why would the elastic recoil pressure of the lung is...
If you became brain-dead, would you want them to pull the plug?
May 17, 2013 I'd want the rest of me to stay alive. Sure it's a lousy way to live but it beats being all-the-way dead. Maybe if I make it 20 years they'll...
MRI bill question
May 15, 2013 Dear PFers, The hospital gave us a $12k bill for one MRI (head with contrast). The people I talked to at the hospital tell me that they do not...
- More from Physics Forums - Medical Sciences
More news stories
More than half of patients diagnosed with Non-Hodgkin Lymphoma (NHL) are now surviving the disease thanks to improved diagnosis and treatment, according to a new report1 from Cancer Research UK.
Cancer 27 minutes ago | not rated yet | 0
Cancer 52 minutes ago | not rated yet | 0 |
(HealthDay)—The American Cancer Society, which is celebrating on Wednesday a century of fighting a disease once viewed as a death sentence, is making a pledge to put itself out of business.
Cancer 14 hours ago | not rated yet | 0
National Lung Screening Trial (NLST) investigators also conclude that the 20 percent reduction in lung cancer mortality with low-dose computed tomography (LDCT) versus chest X-ray (CXR) screening previously reported in the ...
Cancer 15 hours ago | not rated yet | 0
Researchers have developed a new drug delivery system that allows inhalation of chemotherapeutic drugs to help treat lung cancer, and in laboratory and animal tests it appears to reduce the systemic damage ...
Cancer 18 hours ago | not rated yet | 0 |
46 minutes ago | 5 / 5 (1) | 0 |
40 minutes ago | not rated yet | 0 |
Human breastmilk responds quickly to protect the child when there is an infection in mothers or babies, according to new international research led by The University of Western Australia.
52 minutes ago | not rated yet | 0
(Medical Xpress)—According to the World Health Organization, approximately 70 million couples experience infertility worldwide. Current data suggests that nearly one third of infertility disorders are due ...
7 minutes ago | not rated yet | 0
(Medical Xpress)—There is no significant risk directly associated with air travel during pregnancy, even at advanced gestation, says report by the University of Liverpool.
17 minutes ago | not rated yet | 0
To coincide with the broadcast of Jabbed: Love, Fear and Vaccines (SBS ONE, Sunday 26 May at 8.30pm) the first ever national survey on Australian attitudes to vaccination reveals surprising statistics including half of Australians ...
34 minutes ago | not rated yet | 0