Fig. 3
From: A case of primary extraskeletal osteosarcoma of the breast
Magnetic resonance imaging. a A 4.5-cm-diameter mass at the upper outer portion of the right breast. b Fat suppression (FS) T2-weighted imaging (WI): A high signal intensity at the periphery and center of the tumor. c Gadolinium (Gd) FS T1WI: A high signal intensity at the periphery of the tumor but a low signal intensity in the central area