Figure 10a. Intramural-submucosal leiomyoma with peritumoral high signal intensity in a 36-year-old woman. (a) Sagittal T2-weighted fast SE MR image shows a well-circumscribed mass of low signal intensity within the anterior uterine body that distorts the endometrial canal (*). The mass has a thin rim of high signal intensity (arrows). (b) Photomicrograph (original magnification, x20; hematoxylin-eosin stain) of the periphery of the myoma shows blood vessels (large *), lymphatic vessels (small *), and subjacent compact regions of smooth muscle.