Children's cervical spine instability after posterior fossa surgery.
D001254:Astrocytoma / Q000601:surgery; D001932:Brain Neoplasms / Q000601:surgery*; D002528:Cerebellar Neoplasms / Q000601:surgery; D002574:Cervical Vertebrae / Q000503:physiopathology*; D002648:Child; D002675:Child, Preschool; D003388:Cranial Fossa, Posterior / Q000601:surgery*; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D008297:Male; D011183:Postoperative Complications / Q000503:physiopathology*; D012886:Skull / Q000601:surgery*