Tangviriyapaiboon Teera
J Med Assoc Thai. 2016 Jun;99 Suppl 3:S120-5.
The author reported an extremely rare case of intraspinal synovial cyst at C1-C2 junction, located posteriorly to the odontoid process, compressing the upper cervical spinal cord. The patient had a history of spinal trauma 40 years ago without prior definitive treatment, presenting with two months of left leg and arm numbness with neck pain. Imaging studies including plain radiographs, computed tomography (CT), and magnetic resonance imaging (MRI) of the cervical spine showed a large synovial cyst associated with atlantoaxial instability from non-union fracture of the odontoid process. The atlantoaxial fusion was performed without a direct excision of the synovial cyst, the patient showed significant improvement of neck pain and numbness of all extremities. In addition to the fracture stabilization, the follow-up post operative MRI revealed spontaneous regression of the intraspinal synovial cyst after atlantoaxial fusion alone
作者报告了一例极为罕见的C1-C2交界处椎管内滑膜囊肿病例，该囊肿位于齿状突后方，压迫上颈段脊髓。患者40年前有脊柱外伤史，未接受过明确治疗，此次因左腿和左臂麻木伴颈部疼痛两个月前来就诊。包括颈椎X线平片、计算机断层扫描（CT）和磁共振成像（MRI）在内的影像学检查显示，一个大的滑膜囊肿与齿状突骨折不愈合导致的寰枢椎不稳相关。在未直接切除滑膜囊肿的情况下进行了寰枢椎融合术，患者颈部疼痛及四肢麻木症状明显改善。除了骨折固定外，术后随访MRI显示，仅行寰枢椎融合术后，椎管内滑膜囊肿自发消退。
