Collateral supply to uterine leiomyomata from an unnamed vessel: a case report.

Uterine leiomyomata are most often supplied solely by the uterine arteries. However, myomata have been reported to recruit collateral supply, usually from the ovarian arteries, which may contribute to clinical failure of uterine artery embolization. This case report describes a patient in whom a uterine myoma developed collateral supply de novo. The aberrant vessel was identified using computed tomographic angiography (CTA) and was selectively occluded in a successful embolization procedure.