Figure 9. Endometrial hyperplasia in a 43-year-old woman who had been taking tamoxifen for 8 years for treatment of breast cancer with multiple bone metastases. Sagittal T2-weighted image shows thickened endometrium (arrowheads) and myometrium. The endometrium is thickened in a heterogeneous manner, a finding consistent with endometrial hyperplasia. The thickened junctional zone in the posterior uterine wall (
) is indicative of adenomyosis. A leiomyoma (arrows) is present in the anterior uterine wall. Endometrial hyperplasia was demonstrated at histologic examination.