Figure 8b. Stage Ic endometrial carcinoma in a 61-year-old postmenopausal woman. (a) Axial T2-weighted MR image (3,000/85) shows a slightly hyperintense mass in the endometrial cavity (black arrowheads). The junctional zone is disrupted at the anterior aspect (white arrowheads), but the tumor margin is indistinct. An ill-defined hypointense area is noted at the anterior wall of the uterus (arrows). At histopathologic analysis, this area proved to be underlying adenomyosis. (b) Axial gadolinium-enhanced T1-weighted MR image (500/11) shows adenomyosis (arrows), which is better differentiated from the endometrial carcinoma (arrowheads) than on the T2-weighted image (a).