Medical Physics Research Today is a free monthly online journal that collates and summarizes the latest research about Medical Physics, including details on medicine, radiotherapy, biomechanics, medical imaging. | ||||||||
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Sensitivity of MRI versus conventional screening in the diagnosis of BRCA-associated breast cancer in a national prospective series.Hagen AI, Kvistad KA, Maehle L, Holmen MM, Aase H, Styr B, Vabø A, Apold J, Skaane P, Møller P Department of Circulation and Medical Imaging, the Faculty of Medicine, Norwegian University of Science and Technology, Trondheim and Department of Surgery, St. Olav's Hospital, Trondheim University Hospital, N-7006 Trondheim, Norway. We wanted to compare the sensitivities of breast magnetic resonance imaging (MRI) and the conventional screening programme consisting of mammography (XRM) +/- ultrasound for early diagnosis of breast cancer in BRCA1/2 mutation carriers. BRCA1/2 mutation carriers were examined prospectively by both breast MRI and XRM +/- ultrasound. Eight hundred and sixty-seven MRI examinations were carried out in 445 BRCA1 and 46 BRCA2 mutation carriers. A total of 25 cancers were observed, five (20%) as interval cancers. At the time of diagnosis, sensitivity to detect cancer was 19/22=86% for MRI and 12/24=50% for XRM. Twenty-one were examined by both methods at the time of diagnosis. In the19 BRCA1 mutation carriers among them, MRI had a sensitivity of 1/3(33%) to diagnose DCIS and 15/16 (94%) among the invasive cancers. For XRM the sensitivities were 1/3(33%) for DCIS, 3/7(42%) for pT1b, 3/6(50%) for pT1c, and 3/3/100%) for pT2. In the two BRCA2 mutation carriers, both were demonstrated by breast MRI, neither was detected by XRM. Breast MRI had increased sensitivity compared to XRM to diagnose all cancers staged less than pT2. Published 6 August 2007 in Breast, 16(4): 367-74.
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