retrocerebellar arachnoid cysts are a cyst that is filled with fluid. The cyst in this case is located in the retrocerebellar area which is behind the cerebellum. The cerebellum is the part of the brain that has to do with motor function.
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.
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).
It can be: arachnoid cyst colloid cyst enlarged perivascular space dermoid cyst choroid plexus cyst pineal cyst Rathke cleft cyst cystic neoplasm parasites (neurocysticercosis) DW malformation
Arachnoid cysts can cause chronic remodeling and thinning of the adjacent skull. So--while I've personally never seen a case of skull fx directly overlying an arachnoid cyst (general diagnostic radiologist, 6 yrs in practice)--it certainly would seem that the involved portion of skull would be relatively more susceptible to fracture in the event of trauma.
Fenestration (to create an opening) is performed in order to drain the arachnoid cyst. The most recent studies of patients treated using the method called "Endoscopic Fenestration" indicate very good outcomes.
the four most common types of cysts are: the Arachnoid Cyst, also called the leptomeningeal cyst the Colloid Cyst the Dermoid Cyst and the Epidermoid cyst, also called the Epidermoid tumor try researching those individualy for further detail. :]
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.
I don't really know what an "arachnoid cyst" is -in the dictionary it says :A fluid-filled cyst lined with arachnoid membrane, frequently situated in the sylvian fissure of the brain.. So I'm thinking yeah it probably could. Granted, I have no medical license.I will say this: If you're asking because you have a lump on your head and it worries you enough to query online: Go to the Doctor please. Head injuries are not kewl - very serious. That's where your brain is!!Now, my mom always told me if it goes out (like a bump) and it's not squishy then it's OK - call that a learning bump. If it's dented in or if it is squishy then we get worried.Hope this helps.
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.
The middle element of the meninges is the arachnoid membrane
arachnoid granulations