title: Arachnoid cyst presenting as an extradural haematoma.
abstract: A case of extradural haematoma as the presenting feature of an arachnoid cyst is described. Haemorrhagic complications of arachnoid cysts are well known, but extradural haematoma is rare. A possible pathogenetic mechanism is proposed and the treatment of asymptomatic arachnoid cysts is discussed.
authors.affiliation: Department of Neurosurgery, Royal Adelaide Hospital, South Australia.
authors.forename: C J
authors.initials: CJ
authors.lastname: Molloy
authors.forename: N R
authors.initials: NR
authors.lastname: Jones
authors.forename: J B
authors.initials: JB
authors.lastname: North
mesh_terms: D000293:Adolescent; D016080:Arachnoid Cysts / Q000150:complications* / Q000175:diagnosis / Q000601:surgery; D006407:Hematoma, Epidural, Cranial / Q000175:diagnosis / Q000209:etiology* / Q000601:surgery; D006801:Humans; D008279:Magnetic Resonance Imaging; D008297:Male; D014057:Tomography, X-Ray Computed