Figure 3b. Images depict masked carcinoma. (a) US image obtained in the antiradial plane demonstrates an invasive ductal cancer 2 cm in maximal diameter (between cursors) in a 48-year-old woman. (b) Coronal maximum intensity projection of the subtraction images (15/7; flip angle, 30°) obtained with T1-weighted dynamic fast low-angle shot 3D sequence from the first postcontrast and the precontrast study shows that the tumor in the right breast is completely obscured by equally enhanced surrounding parenchyma. (c) Sagittally reconstructed MR image depicts a signal void (arrow), which represents the central tumor fibrosis.