Chang H, Park J B, Kim K W
Department of Orthopaedic Surgery, Uijongbu St. Mary's Hospital, College of Medicine, Catholic University of Korea, Kyunggi-do, Korea.
Spine (Phila Pa 1976). 2000 Mar 15;25(6):741-4. doi: 10.1097/00007632-200003150-00016.
A case report and review of the literature.
To describe the diagnosis and successful treatment of a synovial cyst arising from the transverse ligament in a patient with os odontoideum and atlantoaxial instability.
Synovial cysts arising from the transverse ligament of the atlas are extremely rare. Development of a synovial cyst is thought to be attributable to degenerative changes of the C1-C2 facet joints or to microtrauma. Direct excision of the cyst is the only treatment cited in previous reports.
A synovial cyst arising from the transverse ligament of the atlas in a 45-year-old man with os odontoideum and atlantoaxial instability was treated surgically with posterior atlantoaxial fusion alone. The magnetic resonance images, surgical treatment, and related literature are reviewed.
Preoperative magnetic resonance images of the cervical spine showed a large cystic mass located ventral to the cord arising at the level of the transverse ligament of the atlas: the mass was of low signal intensity on T1-weighted images, was of high signal intensity on T2-weighted images, and was enhanced marginally with gadolinium-DTPA on T1-weighted images. Spontaneous regression of the cyst was identified on the follow-up magnetic resonance images taken 3 months after C1-C2 posterior wiring and fusion.
A patient with a synovial cyst arising at the C1-C2 junction ventrally at the level of the transverse ligament showed spontaneous regression of the lesion after C1-C2 posterior wiring and fusion.
病例报告及文献综述。
描述一名患有齿突小骨和寰枢椎不稳患者中，由横韧带引起的滑膜囊肿的诊断及成功治疗。
由寰椎横韧带引起的滑膜囊肿极为罕见。滑膜囊肿的形成被认为归因于C1-C2小关节的退变改变或微创伤。以往报告中提及的唯一治疗方法是囊肿直接切除。
一名45岁患有齿突小骨和寰枢椎不稳的男性患者，其由寰椎横韧带引起的滑膜囊肿仅通过后路寰枢椎融合术进行手术治疗。对磁共振成像、手术治疗及相关文献进行了综述。
颈椎术前磁共振成像显示，在寰椎横韧带水平脊髓腹侧有一个大的囊性肿块：该肿块在T1加权像上呈低信号强度，在T2加权像上呈高信号强度，在T1加权像上经钆喷酸葡胺增强后边缘强化。在C1-C2后路钢丝固定及融合术后3个月的随访磁共振成像中发现囊肿自发消退。
一名在C1-C2交界处腹侧横韧带水平出现滑膜囊肿的患者，在C1-C2后路钢丝固定及融合术后病变自发消退。
