Figure 7a. Intramyometrial adenomyoma in a 21-year-old woman. (a, b) Axial (a) and sagittal (b) T2-weighted images show an ill-defined, low-signal-intensity mass with an embedded hyperintense cyst in the posterior myometrium (arrows). (c) Sagittal T1-weighted image shows that the cyst within the mass (arrows) has high signal intensity, which represents hemorrhage. Myomectomy was performed, and adenomyosis was pathologically confirmed.