Arachnoid Cyst Treatment News and Symptoms Information

What is an Arachnoid Cyst?

(Symptoms, Causes & Treatment)

According to Weill Cornell Medical College, an arachnoid cyst is a small, benign sac that develops between the brain or spinal cord and the arachnoid membrane (which is one of three membranes that cover the brain and spinal cord). It most often occurs in the brain, where it is also called an intracranial cyst, but an arachnoid cyst can develop in the spinal cord as well.

When an arachnoid cyst is present at birth it is called a primary cyst; those that develop later in life are called secondary cysts. The exact cause of a primary arachnoid cyst is unknown — it develops in a fetus during pregnancy, but nobody knows why. Secondary cysts can be caused by trauma (a fall, accident, or other injury), illness (meningitis or brain tumor), or as a complication of brain surgery.


See below for updated news and information regarding Arachnoid Cysts including new medical research, treatment options and advancements. 

Latest Arachnoid Cyst Treatment News and Research

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