title: Case report 419: Os odontoideum with an ossified pedicle lying between the os and the body of C2.
mesh_terms: D000328:Adult; D001368:Axis, Cervical Vertebra / Q000002:abnormalities*; D002574:Cervical Vertebrae / Q000000981:diagnostic imaging; D005260:Female; D006801:Humans; D009809:Odontoid Process / Q000002:abnormalities* / Q000000981:diagnostic imaging; D010146:Pain / Q000209:etiology*; D011859:Radiography