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Figure 1a. Pelvic arteriography in a 42-year-old woman with a polymyomatous uterus. Superselective, left-anterior-oblique images of the right uterine artery (arrow) demonstrate (a) an enlarged uterine artery with a characteristic peripheral network (arrowheads) that surrounds the myoma and (b) hypervascularity (_*) of the uterus in the late arterial phase.