Figure 1.

a–c. Leiomyosarcoma in a 52-year-old woman. Sagittal T1-weighted image (a), T2-weighted image (b), and gadolinium-enhanced T1-weighted image with fat suppression (c) show marked uterine enlargement due to a heterogeneous myometrial tumor. The lesion demonstrates central hyperintensity on T1-weighted image (a) attributable to extensive hemorrhage, a central area of high signal on T2-weighted image (b) representing cystic necrosis, and early intense enhancement in solid areas of the tumor (c, arrow), as compared with normal myometrium. Irregular central zones of low signal intensity (asterisk) suggest extensive tumor necrosis. Endometrial cavity is pushed anteriorly by the tumor (b, arrow).