What are arachnoid cysts?

Also known as: intracranial cysts, intracranial arachnoid cysts, spinal arachnoid cysts

Arachnoid cysts are fluid filled sacs or cavities that appear on the arachnoid membrane and can present in many locations on the brain and/or spinal cord.

The majority of these cysts are discovered incidentally and do not merit surgical intervention but rarely may cause headaches or progressive enlargement of the head.

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Reviewed by: Jack Wolfsdorf, MD, FAAP

This page was last updated on: 1/29/2019 3:21:13 PM