Osteoid Osteoma Intracanalis of the Cervical Spine : a rare case

Abstract

BackgroundOsteoid osteoma is benign, accounted for 10–40% of spine tumours, Majority occurred in the lumbar spine which occurred in 59%, in spine frequently located in lamina, pedicles, or the transverse and spinous process. Pain is the most common symptoms, classically almost present at night and may awaken the patients. Imaging with CT scan may reveal a focal dense lesion with sclerotic reactive bone, and calcification may appeared. On MRI it may not be as specific as CT. CT guided radiofrequency ablation was safe and effective in spinal osteoid osteoma, but with proximity to neurological structures may not indicated in this group of patientsCase PresentationFemale 61 years old, came to our emergency department with chief complaint of weakness of lower extremities. This has occurred for 5 years and worsening every year. History of neck pain was found. Patient also complained about numbness in both hand and foot for the last 5 years. On physical examination, hyporeflex was found in lower extremities, with motoric of 2 and motoric of 4 in the hand. Sensation was normal in patient. Laminectomy was done on C7/T1, after laminectomy, the flavum ligament was still present, after resecting the ligament, the compact bone in vertebral canal compressing the spinal cord contralaterally, resulting thinning of spinal cord. Using high speed drill, the bone was drilled slowly until reaching the posterior corpus vertebrae.DiscussionOsteoid osteoma comprised of 10–12% total spinal tumour with cell origin of osteoblast and occurred in 1st and 2nd decade of life, occurred mostly in lumbar and predominant in female. Osteoid osteoma comprised of 10–12% total spinal tumour with cell origin of osteoblast and occurred in 1st and 2nd decade of life and occurance is mostly present in lumbar, cervical and dominantly arising from posterior elements. Surgery is the preferred in patients with no recurrency and low remission of symptoms.ConclusionOsteoid osteoma is a benign case of spinal tumour and occurance is also low in all spinal tumor. Radiculopathy is the most common symptoms nonetheless neurological deficit is rarely present. Patients may respond well after surgery with no complication found.