title: Posttraumatic arachnoid cyst at the cranial base with unusual manifestations.
abstract: A posttraumatic epidural arachnoid cyst embedded within the left petrous bone of a 25-year-old woman is reported. The lesion produced clinical manifestations of cerebrospinal fluid rhinorrhea, recurrent meningitides, and neuropathy affecting all divisions of the fifth cranial nerve as well as the eighth cranial nerve on the left side. The location of posttraumatic arachnoid cyst is rare at the cranial base, and the described clinical manifestations are unique.
authors.affiliation: Department of Medicine, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand.
authors.forename: K
authors.initials: K
authors.lastname: Phanthumchinda
authors.forename: S
authors.initials: S
authors.lastname: Shuangshoti
authors.forename: S
authors.initials: S
authors.lastname: Khaoroptham
mesh_terms: D000328:Adult; D001099:Arachnoid / Q000000981:diagnostic imaging; D002493:Central Nervous System Diseases / Q000000981:diagnostic imaging / Q000209:etiology / Q000473:pathology; D006259:Craniocerebral Trauma / Q000150:complications*; D003560:Cysts / Q000000981:diagnostic imaging / Q000209:etiology* / Q000473:pathology; D005260:Female; D006801:Humans; D009422:Nervous System Diseases / Q000209:etiology; D012886:Skull / Q000000981:diagnostic imaging; D014057:Tomography, X-Ray Computed