Uterine cirsoid aneurysm is uncommon. It is important to make a diagno
sis of this disease preoperatively, because repeated curettages may in
duce life-threatening massive genital bleeding. We present a case of a
51-year-old woman with uterine cirsoid aneurysm in whom MRI and MRA w
ere very useful for the preoperative diagnosis. The radiologic appeara
nces on ultrasonography, CT, conventional SE MRI, MRA, dynamic MRI, an
d pelvic angiography are presented. Conventional SE T1-weighted and T2
-weighted images demonstrated multiple flow voids in the uterus and bi
lateral adnexal regions, MRA demonstrated a cluster of distinct, tortu
ous, and coiled vascular channels in the pelvis. MRA could obtain imag
es almost equal to angiography and was considered to be an excellent n
oninvasive imaging technique for the diagnosis of uterine cirsoid aneu
rysm.