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Background Parenchymal Enhancement at Breast MR Imaging and Breast Cancer Risk.
MedLine Citation:
PMID:  21493794     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
Purpose: To examine the relationships between breast cancer and both amount of fibroglandular tissue (FGT) and level of background parenchymal enhancement (BPE) at magnetic resonance (MR) imaging. Materials and Methods: A waiver of authorization was granted by the institutional review board for this retrospective HIPAA-compliant study. Among 1275 women who underwent breast MR imaging screening between December 2002 and February 2008, 39 breast carcinoma cases were identified. Two comparisons were performed: In one comparison, two normal controls-those of the women with negative (benign) findings at breast MR imaging-were matched to each breast cancer case on the basis of age and date of MR imaging. In the second comparison, one false-positive control-that of a woman with suspicious but nonmalignant findings at MR imaging-was similarly matched to each breast cancer case. Two readers independently rated the level of MR imaging-depicted BPE and the amount of MR imaging-depicted FGT by using a categorical scale: BPE was categorized as minimal, mild, moderate, or marked, and FGT was categorized as fatty, scattered, heterogeneously dense, or dense. Results: Compared with the odds ratio (OR) for a normal control, the OR for breast cancer increased significantly with increasing BPE: The ORs for moderate or marked BPE versus minimal or mild BPE were 10.1 (95% confidence interval [CI]: 2.9, 35.3; P < .001) and 3.3 (95% CI: 1.3, 8.3; P = .006) for readers 1 and 2, respectively. Similar odds were seen when the false-positive controls were compared with the breast cancer cases: The ORs for moderate or marked BPE versus minimal or mild BPE were 5.1 (95% CI: 1.4, 19.1; P = .005) and 3.7 (95% CI: 1.2, 11.2; P = .013) for readers 1 and 2, respectively. The breast cancer odds also increased with increasing FGT, but the BPE findings remained significant after adjustment for FGT. Conclusion: Increased BPE is strongly predictive of breast cancer odds. © RSNA, 2011.
Authors:
Valencia King; Jennifer D Brooks; Jonine L Bernstein; Anne S Reiner; Malcolm C Pike; Elizabeth A Morris
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2011-4-14
Journal Detail:
Title:  Radiology     Volume:  -     ISSN:  1527-1315     ISO Abbreviation:  -     Publication Date:  2011 Apr 
Date Detail:
Created Date:  2011-4-15     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0401260     Medline TA:  Radiology     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Affiliation:
Departments of Radiology and Epidemiology and Biostatistics, Memorial Sloan-Kettering Cancer Center, Evelyn H. Lauder Breast Center, 300 E 66th St, Room 715, New York, NY 10065.
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