Crowned dens syndrome
Incidentally noted in a patient with a history of a fall. Also seen in this patient (not shown) are multiple craniofacial fractures and parenchymal contusion hematomas.
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Faint calcifications surround the dens in a "crown"-like fashion.
Faint calcifications lining the dens are usually associated with calcium pyrophosphate dihydrate deposition disease or hydroxyapatite deposition disease.