<b>Characterization of Lesions of the Breast with Proton MR Spectroscopy:</b> Comparison of Carcinomas, Benign Lesions, and Phyllodes Tumors

Abstract

Proton MR spectroscopy is useful in the in vivo characterization of breast masses when the lesion exceeds 1.5 cm in maximal dimension. Spectroscopy is unable to reveal benign breast lesions and phyllodes tumors of benign and borderline malignancy. We suggest that a false-negative spectroscopic result may be related to an absence of HER2/neu overexpression in carcinoma of the breast.