Dynamic high-spatial resolution post contrast MR imaging of mammographically suspicious breast lesions

Abstract

Suspicious mammographic findings of malignancy include: spiculated or stellate masses rith or without microcalcifications, asymmetrical breast tissue, especially when associated with 31cifications, areas of architectural distortion, and pleomorphic microcalcifications that are greater

•ian five in number.

Dynamic post-contrast MR imaging of the breast has potential role in evaluation of mblematic or questionable lesions on mammogram as well as dense breasts in all age groups, 3ndering it an important complementary method to other conventional imaging modalities.

The practical work included 40 patients (representing 62 studied lesions}, who were

•ivided into two groups according to their presentation. Group I included 30 patients (411esions}

•resented by suspected lesions on clinical work up and/or mammography. Group II included 10

-atients (211esions) under chemotherapy and radiotherapy conservation where the tumor behavior in

3sponse to chemotherapy rather than its morphology were considered our item of suspicion, a priority rJhich could not be available to us by mammography alone. The result of this study showed the value of MRI in increasing delectability of breast lesions specially in mammographically dense breasts reaching a sensitivity of %5%, specificity of 83.3% dnd an accuracy of 92.6%. It can also, act as an accurate method for evaluating the response of different breast neoplasm to conserving chemo-and radiotherapy, which in turn help to determine the ;urgical approach (total mastectomy, or just lumpectomy}.