Functional scoliosis caused by painful leiomyoma of deep soft tissue: A case report

Leiomyoma of deep soft tissue is a rare benign tumor, which is often associated with pain. Although painful spinal bone tumors, such as osteoid osteoma and osteoblastoma, are known to cause secondary functional scoliosis, soft tissue tumors rarely cause the scoliosis. To the best of our knowledge, there are no reports on leiomyoma of deep soft tissue causing scoliosis. We present the case of a 35-year-old woman with a leiomyoma of deep soft tissue arising in the paraspinal muscle. The tumor caused persistent lower back pain, resulting in functional scoliosis. After tumor resection, the pain relieved immediately, and the scoliosis improved seven months later. We report the first case of a painful leiomyoma of deep soft tissue causing functional scoliosis. Thus, this report informs clinicians of the possibility of painful soft tissue tumor arising in paraspinal muscle leading to scoliosis.