Arachnoid cysts are the most common type of brain cyst. They're not tumors, but cysts filled with cerebrospinal fluid (a clear liquid that surrounds your brain and spinal cord). Most people who have ...

Arachnoid Cyst of the Posterior Cranial Fossa: (Left) T1-weighted axial MRI; (Right) T2-weighted axial image. Note the large cystic lesion in the posterior fossa. As the cyst contains fluid, it is ...

Ohio State football coach Urban Meyer announced Tuesday he is leaving the program next month because of an arachnoid cyst that has gotten worse this year. To learn more about the condition, The ...

The most common type of brain cyst (arachnoid) has no known cause. New research investigating patients with these cysts has found something unexpected—a potential genetic link. Cerebral arachnoid ...

For the past 20 years, Urban Meyer has dealt with an arachnoid cyst in his brain and recent flare-ups that have contributed to speculation that this could be Meyer’s last season at Ohio State. Meyer ...

Arachnoid cysts (ACs) are benign, discrete pockets of CSF (cerebrospinal fluid) or CSF-like fluids, accounting for 1% of all intracranial space-occupying lesions. Commonly observed during childhood, ...

Arachnoid Cyst of the Middle Cranial Fossa: (Left) T1-weighted axial MRI; (Right) T2-weighted axial image. Note the large cyst in the right middle cranial fossa, anterior to the temporal lobe. The ...