Benign Metastasizing Leiomyoma (BML) in the Sacrum: a Case Report

Abstract

We report a case of benign metastasizing leiomyoma (BML) in the sacrum. A 42-year-old woman with a history of myomectomy for a uterine myoma presented with severe right leg pain. An MRI showed right sided epidural lesion at S1 level. This lesion was diagnosed with meningioma by under fluoroscopy-guided percutaneous biopsy. Her symptom progressed during follow-up. Partial resection of the epidural lesion was performed for both a definitive diagnosis and a pain relief. After the surgery, her pain was relieved.

Histopathology of the surgical specimen revealed features consistent with a benign smooth muscle tumor. We consulted gynecologists and an oophorectomy for hormone control was scheduled to prevent regrowth of residual tumor and further metastasis.