Congenital absence of the odontoid process.
IVIE
J M
JM
D001368:Axis, Cervical Vertebra / Q000002:abnormalities*; D001921:Brain / Q000002:abnormalities*; D001927:Brain Diseases; D001270:Cervical Atlas / Q000002:abnormalities*; D006801:Humans; D009809:Odontoid Process
ATLAS AND AXIS/abnormalities; BRAIN/abnormalities