C1-2 instability from os odontoideum mimicking intramedullary spinal cord tumor.
J Neurosurg Pediatr. 2011 Oct;8(4):363-6
Authors: Gigante PR, Feldstein NA, Anderson RC
Os odontoideum is a common cause of atlantoaxial instability in the pediatric population. The authors present the cases of 2 patients whose initial clinical presentation and MR imaging findings were suggestive of an intramedullary neoplasm, but whose ultimate diagnosis was determined to be cervical spine instability and cord injury due to os odontoideum.
PMID: 21961541 [PubMed - indexed for MEDLINE]