Journal
EUROPEAN RADIOLOGY
Volume 11, Issue 9, Pages 1766-1769Publisher
SPRINGER
DOI: 10.1007/s003300000755
Keywords
atlas; cervical canal stenosis; congenital; posterior arch; magnetic resonance imaging; computed tomography
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Developmental symptomatic Cl canal stenosis is very rare. We describe the computed tomography (CT) and magnetic resonance imaging (MRI) appearances in a 8-year-old child who presented with progressive upper and lower limb neurological symptoms and in whom imaging revealed the medial posterior hemiarches of a bifid Cl to be inturned and compressing the cervical cord. This particular configuration of the posterior arch of atlas is frequently associated with other craniocervical bony anomalies and presents with neurological symptoms early in life. Early CT or MRI examination of patients with symptomatic posterior arch of Cl defects is necessary, in order to detect such an appearance, since surgical treatment may prevent neurological deterioration.
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