An angiographic sign of cerebellar tonsillar herniation.
D001139:Arnold-Chiari Malformation / Q000150:complications; D001254:Astrocytoma / Q000150:complications; D002526:Cerebellar Diseases / Q000000981:diagnostic imaging* / Q000209:etiology; D002528:Cerebellar Neoplasms / Q000150:complications; D002533:Cerebral Angiography; D006547:Hernia / Q000000981:diagnostic imaging* / Q000209:etiology; D006801:Humans; D008527:Medulloblastoma / Q000150:complications; D009362:Neoplasm Metastasis; D009442:Neurilemmoma / Q000150:complications; D010524:Peripheral Nervous System Neoplasms / Q000150:complications; D011011:Pneumoencephalography; D012507:Sarcoidosis / Q000150:complications; D000159:Vestibulocochlear Nerve