what is crowned dens syndrome
Crowned dens syndrome is characterized by recurrent neck pain related to radiodense deposits of hydroxyapatite or calcium pyrophosphate dihydrate in ligaments around the odontoid process, which create the appearance of a crown or halo surrounding the odontoid process on radiographic imaging.omputed tomography of the neck showed curvilinear calcifications of the transverse ligament of the atlas (Panel A, arrows), a linear calcification (Panel B, arrows), and crown-shaped calcium deposits surrounding the odontoid process (Panel C, arrowheads).