Central nervous system cyst

What it means

A fluid-filled sac (cyst) located within the central nervous system.

Cysts of CNS are usually maldevelopmental in nature, but in some cases are acquired. The recognition of these cysts radiologically and confirmation by pathology is essential for prognostic purposes.

Rare diseases that can present with this1

The range is how often this sign appears among people diagnosed with each disease — it is not a probability of having any of them. Many of these signs also occur in common, non-rare conditions. A sign on this page is a conversation to have with a clinician, not a conclusion.

Part of the broader category

Also called: CNS cyst · Cyst of the central nervous system