Osteoma in the Lumbar Spinal Canal as a Rare Cause of Sciatica: A Case Report and Literature Review

Abstract

Among the etiological causes of lumbar pain, the osteoma is a rare benign bone tumor of the spine. The osteoma is a slowly growing benign tumor arising from normal bone formation in the periosteum. Osteomas are usually seen in the skull and long bones, but in the literature, rare cases of osteomas affecting the vertebra corpus, pedicle and posterior element are encountered. In this case, a 28-year-old man presented with an osteoma originating from the left L5-S1 lateral recess and causing lumbo-crural sciatica. The osteoma originating from lateral foramina causes lateral spinal stenosis, sciatica and neuropathic pain in the patient. On magnetic resonance imaging, osteoma was not detected and the diagnosis was confirmed by computed tomography. At the same time, when the patient's anamnesis was deepened, accompanying spondyloarthropathy was diagnosed.