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Retro-odontoid Synovial Cyst with Os Odontoideum and Atlantoaxial Instability  

Kim, Sang-Woo (Department of Neurosurgery, College of Medicine, Yeungnam University)
Chang, Chul-Hoon (Department of Neurosurgery, College of Medicine, Yeungnam University)
Kim, Seong-Ho (Department of Neurosurgery, College of Medicine, Yeungnam University)
Publication Information
Journal of Korean Neurosurgical Society / v.39, no.3, 2006 , pp. 221-223 More about this Journal
Abstract
We report the case of a patient with a retro-odontoid synovial cyst, coupled with os odontoideum and atlantoaxial instability. We observed the regression of the cyst after C1-2 transarticular screw fixation and posterior wiring without direct surgical excision of the cyst on the follow-up MR images, which were obtained two and three months postoperatively. The myelopathic symptoms and signs of this patient were resolved by degrees.
Keywords
Synovial cyst; Os odontoideum; Atlantoaxial instability; C1-2 fixation; Spontaneous reduction;
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