ROLE OF MRI IN IMPALPABLE BREAST-LESIONS - PRELIMINARY-RESULTS

The purpose of this study is to assess the value of MR imagin in nonpa lpable breast tumors. Thirty-two women whose mammogram showed opacity, architectural distorsionor microcalcifications, underwent preoperativ e dynamic MR studies with quantitative evaluation of contrast enhancem ent. MR showed early contrast enhancement in 10/12 breast cancers (2 f alse-negative) and in 6/20 benign lesions (false-positive). Quantitati ve study of contrast enhancement does not allow clear differentiation between these lesions. Further studies are required to confirm these f indings and purpose MR imaging for aid in detection of carcinomas. Mul tifocal sudden enhancements are possible in benign lesions and incite to limit MR to focal mammographic abnormalities.