crowned dens syndrome

== English == === Etymology === Named by Jean-Pierre Bouvet et al. in December 1985 in Arthritis and Rheumatism. === Noun === crowned dens syndrome (uncountable) (medicine) A clinical and radiological syndrome caused by the deposition of calcium pyrophosphate crystals in the ligaments surrounding the odontoid process, characterized by acute occipital pain, limited neck mobility and typical radiographic findings.