Arachnoid cyst epidemiology and demographics: Difference between revisions
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==Epidemiology== | ==Epidemiology== | ||
* The prevalence of arachnoid cysts is estimated to be about 1.2% of the general population; | * The prevalence of arachnoid cysts is estimated to be about 1.2% of the general population;<ref name=":0" /> | ||
* They are more frequently seen in men than in women; | * They are more frequently seen in men than in women; | ||
* 50% occur in the middle cranial fossa; | * 50% occur in the middle cranial fossa; | ||
* One third of the cases occur in the posterior fossa; | * One third of the cases occur in the posterior fossa; | ||
* Temporal cysts are 70% left-sided.<ref>Weber, Frank. "The Prevalence of Intracranial Arachnoid Cysts." ''Arachnoid Cysts''. Academic Press, 2018. 95-100.</ref> | * Temporal cysts are 70% left-sided.<ref name=":0">Weber, Frank. "The Prevalence of Intracranial Arachnoid Cysts." ''Arachnoid Cysts''. Academic Press, 2018. 95-100.</ref> | ||
* Only 20% of these have symptoms, usually from secondary [[hydrocephalus]].<ref name="MassNeur">Flaherty AW. ''The Massachusetts General Hospital Handbook of Neurology'' 2000 Jan 1;105. (ISBN 0-683-30576-X)</ref> | * Only 20% of these have symptoms, usually from secondary [[hydrocephalus]].<ref name="MassNeur">Flaherty AW. ''The Massachusetts General Hospital Handbook of Neurology'' 2000 Jan 1;105. (ISBN 0-683-30576-X)</ref> | ||
Revision as of 02:28, 22 June 2020
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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]
Overview
Arachnoid cysts occur in about 1.2% of the general population and are more frequently seen in men than in women.
Epidemiology
- The prevalence of arachnoid cysts is estimated to be about 1.2% of the general population;[1]
- They are more frequently seen in men than in women;
- 50% occur in the middle cranial fossa;
- One third of the cases occur in the posterior fossa;
- Temporal cysts are 70% left-sided.[1]
- Only 20% of these have symptoms, usually from secondary hydrocephalus.[2]