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Academia and the Profession |

Evaluation of Abnormal Mammography Results and Palpable Breast Abnormalities

Karla Kerlikowske, MD; Rebecca Smith-Bindman, MD; Britt-Marie Ljung, MD; and Deborah Grady, MD, MPH
[+] Article and Author Information

From the University of California, San Francisco, and the Department of Veterans Affairs, San Francisco, California.


Grant Support: In part by a National Cancer Institute–funded Breast Cancer Surveillance Consortium co-operative agreement (U01CA63740) and National Cancer Institute–funded UCSF Breast Cancer SPORE (Specialized Program of Research Excellence) (P50 CA58207).

Potential Financial Conflicts of Interest: None disclosed.

Requests for Single Reprints: Karla Kerlikowske, MD, General Internal Medicine Section, San Francisco Veterans Affairs Medical Center, 111A1, 4150 Clement Street, San Francisco, CA 94121; e-mail, kerliko@itsa.ucsf.edu.

Current Author Addresses: Drs. Kerlikowske and Grady: San Francisco Veterans Affairs Medical Center, General Internal Medicine Section, 111A1, 4150 Clement Street, San Francisco, CA 94121.

Dr. Smith-Bindman: Department of Radiology, University of California San Francisco, UCSF/Mt. Zion Campus, 1600 Divisadero Street, Box 1667, San Francisco, CA 94115.

Dr. Ljung: Department of Pathology, University of California San Francisco, UCSF/Mt. Zion Campus, Box 1710, San Francisco, CA 94143.


Ann Intern Med. 2003;139(4):274-284. doi:10.7326/0003-4819-139-4-200308190-00010
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Background: Because approximately 1 in 10 women with a breast lump or abnormal mammography result will have breast cancer, a series of decisions must be taken by a primary care practitioner to exclude or establish a diagnosis of breast cancer among these women.

Purpose: To determine the most accurate and least invasive means to evaluate an abnormal mammography result and a palpable breast abnormality.

Data Source: MEDLINE search (January 1966 to March 2003) for articles and reviews describing the accuracy of clinical examination, biopsy procedures, and radiographic examination for patients with abnormal mammography results or palpable breast abnormalities.

Study Selection: The authors reviewed abstracts and selected articles that provided relevant primary data. Studies were included if 1) mammography, fine-needle aspiration biopsy, or core-needle biopsy was performed before a definitive diagnosis was obtained; 2) the study sample included 100 or more women; and 3) breast cancer status was determined from histopathology review of excisional biopsy specimens, from linkage with a state cancer registry or the Surveillance, Epidemiology, and End Results program, or from clinical follow-up of 95% or more of the study sample.

Data Extraction: One investigator abstracted results. Methods were evaluated for major potential biases, but methodologic scoring was not performed.

Data Synthesis: Likelihood ratios for first screening mammography were 0.1 for the Breast Imaging Reporting and Data System (BI-RADS) assessment category negative or benign finding, 1.2 for probably benign finding, 7 for need additional imaging evaluation, 125 for suspicious abnormality, and 2200 for highly suggestive of malignancy. For fine-needle aspiration biopsy of a palpable lump performed by formally trained physicians, the likelihood ratio was infinity for an assessment of malignant, 2.6 for atypical/suspicious, and 0.02 for benign. When diagnostic mammography was used to evaluate a palpable lump or nonpalpable breast abnormality, the positive likelihood ratios were 5.6 and 9.4, and the negative likelihood ratios were 0.15 and 0.19, respectively.

Conclusions: Women whose screening mammography results are interpreted as suspicious abnormality or highly suggestive of malignancy have a high risk for breast cancer and should undergo core-needle biopsy or needle localization with surgical biopsy. Women whose screening mammography results are interpreted as need additional imaging evaluation have a moderate risk for breast cancer and should undergo diagnostic mammography or ultrasonography to decide whether a nonpalpable breast lesion should be biopsied. Women whose screening mammography results are interpreted as probably benign finding have a low risk for breast cancer and can undergo follow-up mammography in 6 months. Either fine-needle aspiration biopsy or ultrasonography is recommended as the first diagnostic test of a palpable breast abnormality to distinguish simple cysts from solid masses. Fine-needle aspiration biopsy also allows characterization of a solid mass. Diagnostic mammography does not help determine whether a palpable breast mass should be biopsied and should not affect the decision to perform a biopsy.

Figures

Grahic Jump Location
Figure 1.
Flow diagram for evaluation of an abnormal screening mammography result in a woman without breast symptoms.

BI-RADS = Breast Imaging Reporting and Data System.

Grahic Jump Location
Grahic Jump Location
Figure 2.
Flow diagram for evaluation of a dominant breast abnormality.
Grahic Jump Location

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