Demonstration of the hypoglossal canal at positive contrast posterior fossa myelography. The fickle finger sign.
D003287:Contrast Media; D003388:Cranial Fossa, Posterior / Q000000981:diagnostic imaging; D004428:Ear Neoplasms / Q000000981:diagnostic imaging; D007758:Ear, Inner / Q000000981:diagnostic imaging; D005260:Female; D006801:Humans; D008875:Middle Aged; D009192:Myelography; D009442:Neurilemmoma / Q000000981:diagnostic imaging; D009777:Occipital Bone / Q000000981:diagnostic imaging*; D012886:Skull / Q000000981:diagnostic imaging*; D013701:Temporal Bone / Q000000981:diagnostic imaging; D014054:Tomography
D003287:Contrast Media