Benign metastasizing leiomyoma (BML) is an extrauterine smooth muscle tumor that occurs in patients with a current or prior history of uterine leiomyoma. BML in the spine is extremely rare. We report 2 cases of spinal BML mimicking dumbbell tumors in the cervical or lumbar spine. Tumors in both cases relapsed after tumor resection; however, t he tumor did not progress while on hormone therapy . Highlights ? We report rare 2 cases of spinal benign metastasizing leiomyoma (BML) mimicking dumbbell tumors in the spine. ? One of the present cases may be the first instance of BML reported in the lumbar spine. ? Tumors in both cases relapsed after tumor resection; however, hormone therapy was effective to control of recurrent tumors.
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