Aneurysmal bone cysts are benign and uncommon lesions of the spine. We report two cases with aneurysmal bone cysts in the cervical region. The first patient is a 12 years old girl who has a history of difficulty in moving her neck due to the pain över a period of six months. Plain radiographs revealed a severe gibbous deformity at the sixth cervical vertebra. On magnetic resonance imaging, a huge lesion, possibly orîginating from posterior portion of the sixth cervical vertebra and extending anteriorly was seen. The tumor was removed subtotally in two stages. Seven months later, the patient has had evidence of recurrence and she undervvent a second operation. Recurrence tumor was excised and fusion was performed with costal allograft. The second patient is a 13 years old boy with pain and svvelling in upper cervical region. On magnetic resonance imaging, posterior portion of the cervical second vertebra was occupied by a cystic trabecular mass. Gross total removal of tumor was accomplished at a single operation. During fourteen months follow-up there was no recurrence. Neurologic examination of both patients revealed no abnormal signs in the preoperative and postoperative period. İn teenage-patients with difficulty in moving of neck and cervical pain, aneurysmal bone cyst should be considered. Goal of the treatment of this disease should include total tumor excision and/or fusion with combined stages.

Keywords: Aneurysmal bone cyst, Cervical spine, Surgery