Leiomyosarcoma in a premenopausal patient after uterine artery embolization.

A premenopausal 45-year-old woman underwent uterine artery embolization for suspected symptomatic leiomyomata. Fourteen months later, with renewed symptoms and a new pelvic mass, metastatic leiomyosarcoma was diagnosed. A lack of clinical response to a technically successful embolization should alert care providers that further evaluation and/or therapy is needed.