A rare case of benign metastasizing leiomyoma at vertebrae

Benign metastasizing leiomyoma (BML) is a rare disease that usually occurs in women of reproductive age, with a history of uterine leiomyoma treated with hysterectomy. This may present as lesions in lungs, lymph nodes, bones, brain, mediastinum, and soft tissues. However, the most commonly affected site is the lung. Here is a case report of a patient who presented with BML at vertebral body with distant metastasis to lungs, brain, and bones. A 37-year-old female, with no known comorbidities, presented with pain in the upper back, urinary and bowel incontinence, and weakness in the bilateral lower limbs. Radiological, multiple metastases were present at D2 and D9 vertebral bodies, multiple nodular lesions were present in the lungs, and solitary lesion was found in the right frontal lobe of the brain. Histology proved it to be of myoepithelial origin with low Ki-67 index. The treatment in this case was based on hormone production suppression and radiotherapy, with no signs of progression at follow-up.