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Korean J Spine. 2014 Mar;11(1):15-7. doi: 10.14245/kjs.2014.11.1.15. Epub 2014 Mar 31.

Crowned dens syndrome: a case report and review of the literature.

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Department of Neurosurgery, Soonchunhyang University College of Medicine, Seoul, Korea.


The crowned dens syndrome (CDS), also known as periodontoid calcium pyrophosphate dehydrate crystal deposition disease, is typified clinically by severe cervical pain, neck stiffness and atlantoaxial synovial calcification which could be misdiagnosed as meningitis, epidural abscess, polymyalgia rheumatica, giant cell arthritis, rheumatoid arthritis, cervical spondylitis or metastatic spinal tumor. Crystalline deposition on cervical vertebrae is less well known disease entity and only a limited number of cases have been reported to date. Authors report a case of CDS and describe the clinical feature.


Axis; Calcium pyrophosphate; Computed tomography; Neck pain

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