Craniovertebral junction abnormalities.
D000015:Abnormalities, Multiple / Q000000981:diagnostic imaging / Q000196:embryology / Q000209:etiology / Q000601:surgery*; D000293:Adolescent; D000368:Aged; D002648:Child; D002675:Child, Preschool; D005260:Female; D006801:Humans; D008297:Male; D011183:Postoperative Complications; D011859:Radiography; D012886:Skull / Q000002:abnormalities*; D013131:Spine / Q000002:abnormalities*