Arachnoid cyst epidemiology and demographics: Difference between revisions
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==Epidemiology== | ==Epidemiology== | ||
* The prevalence of arachnoid cysts is estimated to be about | * The prevalence of arachnoid cysts is estimated to be about 1200 in 100,000 of the general population;<ref name=":0" /> | ||
* | * Arachnoid cysts are more prevalent in men; | ||
* 50% occur in the [[middle cranial fossa]]; | * 50% occur in the [[middle cranial fossa]]; | ||
* One third of the cases occur in the [[Posterior cranial fossa|posterior fossa]]; | * One third of the cases occur in the [[Posterior cranial fossa|posterior fossa]]; | ||
Latest revision as of 15:37, 14 July 2020
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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1] Associate Editor(s)-in-Chief: José Eduardo Riceto Loyola Junior, M.D.[2]
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 1200 in 100,000 of the general population;[1]
- Arachnoid cysts are more prevalent in men;
- 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]