Journal
LANCET
Volume 375, Issue 9714, Pages 563-571Publisher
ELSEVIER SCIENCE INC
DOI: 10.1016/S0140-6736(09)62070-5
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Funding
- National Institute for Health Research's Health Technology Assessment Programme [99/27/05]
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Background MRI might improve diagnosis of breast cancer, reducing rates of reoperation efficacy of contrast-enhanced MRI in women with primary breast cancer. Methods We undertook an open, parallel group trial in 45 UK centres, with 1623 women aged 18 years or older with biopsy-proven primary breast cancer who were scheduled for wide local excision after triple assessment. Patients were randomly assigned to receive either MRI (n=816) or no further imaging (807), with use of a minimisation algorithm incorporating a random element. The primary endpoint was the proportion of patients undergoing a repeat operation or further mastectomy within 6 months of random assignment, or a pathologically avoidable mastectomy at initial operation. Analysis was by intention to treat. This study is registered, ISRCTN number 57474502. Findings 816 patients were randomly assigned to MRI and 807 to no MRI. Addition of MRI to conventional triple assessment was not significantly associated with reduced a reoperation rate, with 153 (19%) needing reoperation in the MRI group versus 156 (19%) in the no MRI group, (odds ratio 0.96, 95% CI 0.75-1.24; p=0.77).
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