Navigation Links
Accuracy of diagnostic mammograms varies by radiologist
Date:12/11/2007

SEATTLEFor women with breast symptoms such as lumps, the ability of diagnostic mammograms to detect breast cancer accurately depends strongly on which radiologist reads them, according to a Group Health study published online on December 11 in the Journal of the National Cancer Institute.

When a woman gets a mammogram, she wants to know that if she has breast cancer, the mammogram will be likely to detect it, said study leader Diana Miglioretti, PhD, an associate investigator at Group Health Center for Health Studies. This is especially important when the woman has a breast concern such as a lump.

Ideally, this ability to accurately detect cancer (known as sensitivity) would be consistently high, with few false-positivesbiopsies performed despite the absence of cancer. And it wouldnt depend on which radiologist was reading the mammograms. But thats not what we found, she added.

The research team examined how well 123 radiologists interpreted nearly 36,000 diagnostic mammograms done to evaluate breast problems, such as lumps, from 1996 through 2003 at 72 U.S. facilities, including six from Group Health, that contribute data to the Breast Cancer Surveillance Consortium.

For different radiologists, sensitivity ranged from 27 percent to 100 percent; and false-positives, from 0 to 16 percent. These differences were only partially explained by the characteristics of the patients and the experience of the radiologists.

The radiologists who read diagnostic mammograms most accurately (with highest sensitivity, without too many false-positives) tended to be those who were based at academic medical centers or spent at least 20 percent of their time on breast imaging. By contrast, unlike in Europe, most U.S. women get mammograms interpreted by general radiologists who interpret mammograms as only a small percentage of their practice.

We need to reduce the wide variability among radiologists in how they interpret diagnosticand screeningmammograms, said Miglioretti.

A good way to do that may be to identify the radiologists who are least accurate at reading mammogramsand to improve their performance with extra training. The national Breast Cancer Surveillance Consortium is working on ways to accomplish these goals, including developing an interactive training program.

Women should get regular screening mammograms, said Miglioretti. Mammography isnt perfect, but its the best way we have to detect breast cancer early, when it has the greatest chance of being cured. She also urged women with breast concerns, such as lumps, to try to get evaluated at a center that has at least one breast imaging specialist: a radiologist who spends a large percentage of the time reading mammograms and performing breast biopsies.

Most mammograms are done to screen women with no symptoms for breast cancer. Previous research has shown that radiologists vary widely in how they read such screening mammograms. This new study is the largest to examine what predicts variability in diagnostic mammograms. Migliorettis coauthors included colleagues at Group Health; Harborview Medical Center; University of Washington; University of California, San Francisco; and Oregon Health & Science University.


'/>"/>

Contact: Joan DeClaire
declaire.j@ghc.org
206-287-2653
Group Health Cooperative Center for Health Studies
Source:Eurekalert

Related medicine news :

1. University of Nevada School of Medicine Professor Confirms Accuracy Through Validation Study Using the CSI Health Station Model 6K
2. Simulating kernel production influences maize model accuracy
3. FDA Approves SYMLIN Pen-Injector Devices Offering Convenience and Accuracy for SYMLIN Use
4. Despite Advances in the Accuracy of CT Colonography in Detecting Polyps, Digestive Health Experts Urge Patients to Consider Risks and Realities
5. Use of Technology to Document Comorbid Conditions May Improve Reimbursement, Increase Documentation Accuracy Study Confirms
6. New seed therapy helps pinpoint breast tumors with more accuracy
7. UC San Diego researchers improve accuracy of breast cancer prognoses
8. Mayo Clinic researchers discover new diagnostic test for detecting infection in prosthetic joints
9. The ScottCare Corporation Completes Acquisition of Rozinn Electronics, a Leading Manufacturer of Cardiac Diagnostic Products
10. Quest Diagnostics to Speak at the Bear Stearns Healthcare Conference
11. Pathway Diagnostics Announces Commercial Availability of SensiTrop(TM) HIV Co-receptor Tropism Assay
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:12/7/2016)... ... December 07, 2016 , ... When it came time to blow out his candles on his ... the Pediatric Heart Transplant team at Joe DiMaggio Children’s Hospital surprised his family ... hospital’s 30th heart transplant recipient. , “He was playing at home, when we got ...
(Date:12/7/2016)... PA (PRWEB) , ... December 07, 2016 , ... One ... regular changing of the securement tape is painful for her. "This is why the ... to patients’ heads," she said. , They then created a prototype of the patent-pending ...
(Date:12/7/2016)... ... December 07, 2016 , ... The Honolulu cosmetic and ... website, which launched October 17, 2016, features comprehensive information regarding a wide range ... Visitors and patients can discover the latest clinical dermatology treatments for medical skin ...
(Date:12/7/2016)... ... , ... The medical profession is well aware that heart attacks do indeed ... heart attacks among 138,602 people recorded a 35% higher number of heart attacks in ... of course–no time of year is a good time for a heart attack! In ...
(Date:12/7/2016)... ... December 07, 2016 , ... “The Road To Restoration”: ... trial, not a one hour a week showing of hands. “The Road To Restoration” ... begins, “Perhaps you are familiar with the brass ring that you could reach out ...
Breaking Medicine News(10 mins):
(Date:12/7/2016)... 2016   Arena Pharmaceuticals, Inc. (NASDAQ: ... enrollment in the ralinepag phase 2 trial.  Ralinepag is ... pathway for the treatment of pulmonary arterial hypertension (PAH). ... "This marks an important step in the ... focus on our pipeline," said Amit Munshi , ...
(Date:12/7/2016)... Conn. , Dec. 7, 2016 According to ... in more than one-third (38%) of patients with non-small cell ... epidermal growth factor receptor (EGFR) genetic mutation status. The findings ... ( LBA ID #6067 #P3.02b ) at the ... Vienna, Austria . The survey results revealed ...
(Date:12/7/2016)... 7,2016  Based on its recent analysis ... & Sullivan recognizes Nemaura Pharma Limited with ... for Enabling Technology Leadership. Nemaura Pharma,s transdermal ... traditional drug delivery technologies, especially in delivering ... delivery technologies, Memspatch and Micropatch respectively, facilitate ...
Breaking Medicine Technology: