“Central Nervous System Cysts”  

  In our body's central nervous system (CNS) Central Nervous System Cysts are congenital or acquired cysts of the brain, spinal cord, or meninges which may remain stable in size or undergo progressive enlargemen.
  Examples of related central nervous system cysts include:

• arachnoid cysts
• colloid cysts
• Rathke Cleft Cysts

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“Arachnoid Cysts”  

  In our body between the brain or spinal cord, the abnormality, Arachnoid Cysts are cysts in the intracranial or spinal cavities, containing a cerebrospinal-like fluid-filled sacs, the wall of which is composed of arachnoidal cells, located between the brain or spinal cord and the arachnoid membrane (one of the three membranes (meninges) that cover the brain and spinal cord).

Retrocerebellar Arachnoid Cysts

  In our body's head behind the brain near the brainstem, a Retrocerebellar Arachnoid Cyst is an arachnoid cyst located behind the cerebellum.
  In our body, Arachnoid Cysts may be associated with the excessive accumulation of cerebrospinal fluid (hydrocephalus). **

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“Colloid Cysts”  

  In our body, Colloid Cysts are congenital neuroepithelial cysts (central nervous system cysts), typically filled with a viscous mucus. **

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