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Radiology, Vol 197, 387-395, Copyright © 1995 by Radiological Society of North America
ARTICLES |
PC Stomper, S Herman, DL Klippenstein, JS Winston, SB Edge, MA Arredondo, RV Mazurchuk and LE Blumenson
Department of Diagnostic Radiology, Roswell Park Cancer Institute, State University at New York (SUNY) at Buffalo 14263, USA.
PURPOSE: To prospectively correlate dynamic contrast enhancement at magnetic resonance (MR) imaging with mammographic and pathologic features of suspect breast lesions. MATERIALS AND METHODS: Forty-nine patients with 51 breast lesions underwent gadolinium-enhanced spoiled gradient-recalled echo (SPGR) MR imaging at 1.5 T, as well as excisional biopsy or cyst aspiration. RESULTS: Twenty-two of 22 (100%) invasive carcinomas 8 mm or more in diameter, including three (12%) not evident on dense mammograms, enhanced 2.0 or more times the unenhanced intensity. One of three predominantly ductal carcinomas in situ and 10 of 26 (38%) benign lesions enhanced 2.0 or more times. Time-intensity curves were not statistically significantly different among enhancing carcinomas, fibroadenomas, or other benign lesions and showed no statistically significant correlations with pathologic size, nodal status, or hormone receptor status of invasive carcinomas. CONCLUSION: MR imaging enhancement of 2.0 or more times had high sensitivity (100%) for invasive carcinomas 8 mm or more in diameter, with moderate specificity (65%). Time-intensity curves showed no significant difference between enhancement of benign and malignant lesions.
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