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Most arachnoid cysts are asymptomatic, and do not require treatment. Where complications are present, leaving arachnoid cysts untreated may cause permanent severe neurological damage due to the progressive expansion of the cyst(s) or hemorrhage (bleeding). [2] However, with treatment most individuals with symptomatic arachnoid cysts do well.
For those with suprasellar arachnoid cysts, it has been discovered that endoscopic ventriculocystocisternostomy is the optimal treatment option. By fenestrating, or opening, the cystic membrane and removing the fluid, all obstructions of the aqueduct were resolved. In patients receiving this treatment, a full recovery is the most common result. [6]
After a diagnosis has been made, immunohistochemistry may be used to differentiate between epithelial cysts and arachnoid cysts. [2] These examinations are useful to get a general idea of possible treatment options, but can be unsatisfactory to diagnose CNS cysts.
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Arachnoid cyst: A defect caused when CSF forms a collection that is trapped in the arachnoid membranes. The resulting cyst can then block the normal flow of CSF from the brain resulting in hydrocephalus as well as other defects. The most common locations for an arachnoid cyst are the middle fossa and the posterior fossa. The most common ...
Arachnoiditis can be difficult to treat and treatment is generally limited to alleviation of pain and other symptoms. [25] While arachnoiditis may not yet be curable with the potential to be life-altering, management including medication, physical therapy , and if appropriate, psychotherapy, can help patients cope with the difficulties it presents.
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Arachnoid granulations (also arachnoid villi, and Pacchionian granulations or bodies) are small outpouchings of the arachnoid mater and subarachnoid space into the dural venous sinuses of the brain. The granulations are thought to mediate the draining of cerebrospinal fluid (CSF) from the subarachnoid space into the venous system .