Skip to main page content
U.S. flag

An official website of the United States government

Dot gov

The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before sharing sensitive information, make sure you’re on a federal government site.

Https

The site is secure.
The https:// ensures that you are connecting to the official website and that any information you provide is encrypted and transmitted securely.

Access keys NCBI Homepage MyNCBI Homepage Main Content Main Navigation
Case Reports
. 2014 Sep;27(4):495-7.
doi: 10.15274/NRJ-2014-10056. Epub 2014 Aug 29.

Crowned dens syndrome. A case report

Affiliations
Case Reports

Crowned dens syndrome. A case report

Anna Koyfman et al. Neuroradiol J. 2014 Sep.

Abstract

Crystal deposition in the cervical spine around the odontoid process may lead to acute neck pain. This rare condition is called crowned dens syndrome and should be considered in the differential diagnosis of a possible etiology for fever, headache and cervical pain of unknown origin. The syndrome is often overlooked, thus leading to misdiagnosis, invasive and useless investigations (lumbar puncture, biopsy), inappropriate treatment (steroids, antibiotics, antiviral drugs) and prolonged hospitalization. This can be prevented by imaging, based on a cervical CT scan that allows an accurate diagnosis. The disease has a good prognosis and symptoms usually subside within a few weeks. We describe a patient with crowned dens syndrome which manifested with clinical (acute occipital headache) and radiographic (calcium deposits in the alar ligament) features. Our patient recovered in four days with symptomatic therapy.

Keywords: acute headache; alar ligament; calcium deposits; crowned dens syndrome.

PubMed Disclaimer

Figures

Figure 1
Figure 1
Axial CT image of the brain at level C1-2 shows calcium deposits around the right side of the odontoid process in the alar ligament.

References

    1. Bouvet JP, Le Parc JM, Michalski B, et al. Acute neck pain due to calcifications surrounding the odontoid process: the crowned dens syndrome. Arthritis Rheum. 1985;28:1417–20. doi: 10.1002/art.1780281215. - DOI - PubMed
    1. Kobayashi Y, Mochida J, Saito I, et al. Calcification of the alar ligament of the cervical spine: imaging findings and clinical course. Skeletal Radiol. 2001;30:295–297. doi: 10.1007/s002560100325. - DOI - PubMed
    1. Salaffi F, Carotti M, Guglielmi G, et al. The crowned dens syndrome as a cause of neck pain: clinical and computed tomography study in patients with calcium pyrophosphate dihydrate deposition disease. Clin Exp Rheumatol. 2008;26:1040–1046. - PubMed
    1. Feydy A, Lioté F, Carlier R, et al. Cervical spine and crystal-associated diseases: imaging findings. Eur Radiol. 2006;16:459–468. doi: 10.1007/s00330-005-2776-z. - DOI - PubMed
    1. Goto S, Umehara J, Aizawa T, et al. Crowned dens syndrome. J Bone Joint Surg Am. 2007;89:2732–6. doi: 10.2106/JBJS.F.01322. - DOI - PubMed

Publication types

LinkOut - more resources