title: Hemiaplasia of the posterior atlantic arch with a low-lying posterior tubercle.
abstract: A case of hemiaplasia of the posterior arch of the atlas with an ossification in the region of the posterior tubercle is presented. The low position of the ossification compared to the contralateral posterior tubercle was concluded to be a part of the anomaly.
mesh_terms: D001270:Cervical Atlas / Q000002:abnormalities* / Q000000981:diagnostic imaging; D005260:Female; D006801:Humans; D008875:Middle Aged; D009999:Ossification, Heterotopic / Q000000981:diagnostic imaging; D014057:Tomography, X-Ray Computed