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Neurology (Expert Forum)
stoke/arachnoid cyst
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stoke/arachnoid cyst
by De__0__0, Jul 03, 1997 12:00AM
Re: stoke/arachnoid cyst
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Posted by ccf Neuro MD on July 11, 1997 at 20:46:19:
In Reply to: stoke/arachnoid cyst posted by Dee on July 03, 1997 at 14:56:10:
: Is it common for person to have asymmetry of lobe structures and arachnoid cyst after suffering a stroke?
Thanks
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Dear Dee, when a stroke occurs, a portion of brain tissue dies. Some scar tissue is formed around the area but the dead tissue is eventually resorbed and there is some “empty space” left. Unless the stroke is small and very deep in the brain, it will indeed cause an asymmetry between the two sides of the brain. This “empty space” fills up with cerebrospinal fluid, which is the fluid that bathes the brain and spinal cord.
An arachnoid cyst refers to a “pocket” of cerebrospinal fluid which is enclosed in arachnoid, which is a membrane that lines the whole central nervous system. Arachnoid cysts are not that uncommon and may be present from birth.. They also can occur after head trauma and sometimes after brain surgery. I do believe they can occur after atrophy of a lobe caused by a stroke, although I cannot you exactly how common it is.
Usually arachnoid cysts do not cause any problems and may be discovered incidentally. Rarely, bleeding can occur around the area of the arachnoid cyst, between the outside of the brain and the skull, a “subdural hematoma”. Also rarely, arachnoid cysts can grow in size and produce mass effect on the nearby brain structures. If this occurs, neurosurgeons can go in and puncture the arachnoid membrane and let the cerebrospinal fluid flow out into the rest of the central nervous system.
I hope you found this helpful. This information was provided for general medical education purposes only. Please consult your physician for diagnostic and treatment options of your specific medical condition.
