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What does it mean when it say minimal asymmetric prominence of right middle frontal sulcus is incidental or represents a small arachnoid cyst?
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How are arachnoid cysts diagnosed?
Arachnoid cysts are most commonly diagnosed followed a complaint of headaches, disruption of vision, or delayed development in a child. Even then, the discovery of a cyst is often incidental to another examination.
What drains cerebrospinal fluid in to venous blood in the dural sinus?
The Cerebrospinal Fluid is absorbed into the venous blood in the dural sinuses through the arachnoid villi. Arachnoid villi connect the subarachnoid space to the superior sagittal sinus.
Which layer of the meninges resembles a spider web?
The middle element of the meninges is the arachnoid membrane
Where does Cerebrospinal fluid enter the bloodstream?
arachnoid granulations
What is an Arachnoid?
An arachnoid is an alternative term for an arachnid.
What function reabsorbs cerebral spinal fluid back into the blood?
arachnoid granulations Normally the pressure of the CSF is higher than that of the venous system, so CSF flows through the arachnoid villi and granulations into the blood
What is ventral sub arachnoid space?
arachnoid space
The subarachnoid space lies between what two layers of meninges?
pia and arachnoid
What causes arachnoid granulation?
Arachnoid granulations (or arachnoid villi) are small protrusions of the arachnoid (the thin second layer covering the brain) through the dura (the thick outer layer).
How can arachnoid cysts be classified?
Arachnoid cysts can be classified according to their location and by the type of tissue making up the cyst wall (arachnoid connective tissue or glioependymal tissue).
What meninges form the loose mid layer brain covering?
Arachnoid mater
What are the demographics of arachnoid cysts?
Infants are most susceptible to developing arachnoid cysts, although cyst formation can occur up through adolescence. Arachnoid cyst development in adults occurs much less frequently. Arachnoid cysts occur predominantly in males.
