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These membranes are called the meninges, the outermost membrane is called the dura mater, then the arachnoid and then the pia mater.
The lobes of the cerebral hemisphere, optic nerves, arachnoid granulations and blood vessels are all identified.
However, no cases of chronic hydrocephalus and suprasellar arachnoid cyst presenting with rhinorrhea as the unique clinical manifestation are reported in the literature.
Subarachnoid hemorrhage-A collection of blood in the subarachnoid space, the space between the arachnoid and pia mater membranes that surround the brain.
Subarachnoid-Referring to the space underneath the arachnoid membrane, the middle of the three membranes that sheath the spinal cord and brain.