Fig. 5.

50-year-old female with right breast cancer and prominent extrapericardial fat pad.

A. Axial T1-weighted fat-suppressed image shows contoured bulging mass (hollow arrows) in anterior mediastinum with signal intensity similar to fat. B. Axial T2-weighted fat-suppressed image shows large mass (hollow arrows) at right side of anterior mediastinum. Note signal intensity of mass is similar to that of surrounding fatty tissue. C. Contrast-enhanced chest CT shows homogeneous fat-attenuation mass (hollow arrows) with straightened margin at right heart border, which is due to positional change. CT scans were performed in supine position and MRI in prone position.