Leiomyomas beyond the uterus; benign metastasizing leiomyomatosis with paraaortic metastasizing endometriosis and intravenous leiomyomatosis: a case series and review of the literature.

Uterine leiomyomas affect 20-30 % of women 35 years and older. Extrauterine leiomyomas are rare and present a greater diagnostic challenge. Those unusual growth patterns occur more often in women of reproductive age with a history of hysterectomy or surgery for uterine leiomyomas. They have been reported in the literature in case reports and small case series and include benign metastasizing leiomyoma (BML), disseminated peritoneal leiomyomatosis, intravenous leiomyomatosis (IVL), parasitic leiomyomas, and retroperitoneal growth. In this case series we present a case of BML with a first report of concomitant endometriosis metastasis to paraaortic lymphnodes, and a case of IVL. The findings and surgical management of those cases, as well as a review of the literature pertinent to those entities, are also presented.