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 ...

Arachnoid cysts are common brain cysts that are basically sacs filled with cerebrospinal fluid (CSF). These fluid-filled sacs are located between either the brain or spinal cord and the arachnoid ...

Arachnoid cysts are fluid-filled sacs in the brain or spinal cord. They can be present before birth or result from a head injury. They typically do not cause symptoms or require treatment. Many cysts ...

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 ...