Fig. 1

Contrast-enhanced T1-weighted fat-suppressed subtraction maximum intensity projection images in the axial (a, d) sagittal (b, e) and coronal (c, f) planes with (top row) and without segmentation (bottom row), showing a 1.3 cm focal non-mass enhancement in the left upper outer quadrant. MRI-guided biopsy yielded atypical ductal hyperplasia (ADH), ADH diagnosis was confirmed on surgical specimen