Hemifacial spasm due to elongation and ectasia of the distal segment of the vertebral artery. Report of two cases.
D000368:Aged; D002533:Cerebral Angiography; D002561:Cerebrovascular Disorders / Q000000981:diagnostic imaging; D004569:Electroencephalography; D004576:Electromyography; D005154:Facial Nerve; D006801:Humans; D008297:Male; D008875:Middle Aged; D009408:Nerve Compression Syndromes / Q000209:etiology*; D010985:Platybasia / Q000150:complications*; D011011:Pneumoencephalography; D013035:Spasm / Q000209:etiology*; D014711:Vertebral Artery / Q000000981:diagnostic imaging*