Chordoma of the atlas.
D001368:Axis, Cervical Vertebra / Q000000981:diagnostic imaging / Q000473:pathology; D001859:Bone Neoplasms / Q000175:diagnosis; D001270:Cervical Atlas / Q000000981:diagnostic imaging / Q000473:pathology; D002817:Chordoma / Q000175:diagnosis; D005260:Female; D006801:Humans; D008875:Middle Aged; D011859:Radiography; D013125:Spinal Neoplasms / Q000175:diagnosis