Benign pelvic metastatic leiomyoma: case report.

Benign metastasizing leiomyoma is a rare condition characterized by benign soft tissue tumors most frequently involving the lung, and is usually associated with a benign leiomyoma or intravenous leiomyomatosis of the uterus. We present a case of a 58-year-old female patient with abdominal pain and symptoms of urinary tract infection four years after hysterectomy due to uterine fibroid. The results of CT revealed a pelvic mass. Pathological examination confirmed that it was a metastatic pelvic benign metastasizing leiomyoma (BML). BML only involving the pelvis is extremely rare. The patient underwent surgical resection and recovered well.