A Case of Benign Osteoblastoma of the Lumbar Spine

Abstract

Benign osteoblastoma is uncommon, benign, vascular, primary bone tumor. It may present diagnostic and therapeutic problems.
We experienced a case of this tumor involved in the lumbar spine and misdiagnosed it as lumbar disc herniation, because of its similarity of the clinical findings.
14-year old boy visited our clinic with complaints of lumbar dull pain and left leg pain. The X-ray films showed no paticular findings except scoliosis. But 6 months after the onset, we found the abnormal calcification in the left side between the transverse processes of L₁ and L₂.
The lesion was curetted. Its histological diagnosis is benign osteoblastoma.