title: Magnetic resonance imaging of a spinal extradural arachnoid cyst.
abstract: A case of extradural arachnoid cyst in the spinal canal of a 16-year-old male was diagnosed by magnetic resonance imaging. The diagnosis was verified by a metrizamide-enhanced computed tomographic myelogram. An operation with a favorable outcome followed. The noninvasive advantages of magnetic resonance imaging in such a diagnosis are demonstrated by this case.
mesh_terms: D000293:Adolescent; D001099:Arachnoid / Q000000981:diagnostic imaging / Q000473:pathology; D003560:Cysts / Q000175:diagnosis* / Q000000981:diagnostic imaging; D006801:Humans; D009682:Magnetic Resonance Spectroscopy; D008297:Male; D011859:Radiography; D013122:Spinal Diseases / Q000175:diagnosis* / Q000000981:diagnostic imaging