About the Pediatric Neurosurgery Fund
Conditions & Diagnoses
> About The Brain
> Achondroplasia
> Aneurysm
> Arachnoid Cyst
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> Craniofacial Anomolies
> Epilepsy
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> Hydrocephalus
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> Moyamoya Disease
> Spasticity
> Spina Bifida
> Syringomyelia (Syrinx)
> Tethered Spinal Cord
> Trauma
Arachnoid Cyst

Arachnoid cysts are cerebrospinal fluid filled sacs that form in the brain or spine. These cysts often begin in infancy but may also present in adolescence. Males are more commonly diagnoses than females.

Most children with arachnoid cysts do not have any symptoms. However, some children will develop complications due to compression of the CSF pathway or of a neural structure. As with any cyst, many arachnoid cysts will grow and some will shrink.

What are the symptoms of Arachnoid Cyst(s)?

Small cysts are usually discovered incidentally during neuroimaging (e.g., during an MRI following a concussion)

Large cysts may cause the head to grow larger in size and possible resulting in headaches, hydrocephalus, loss of balance, weakness in one side of the body, behaviorial changes, developmental delay, and rarely seizures.

Treatment of Arachnoid Cyst(s):

After thorough discussion with your neurosurgeon and if surgical treatment of the arachnoid cyst is indicated, a cystoperitoneal shunt may be inserted to help drain the cyst and relieve the pressure in the brain.

Another surgical intervention is called cyst fenestration. In this procedure, the walls of the cyst are opened up. Both of these surgical interventions are typically successful and well tolerated.