arachnoidal


Also found in: Dictionary.
Related to arachnoidal: Arachnoid villi, arachnoid cyst

ar·ach·noi·dal

(ar'ak-noy'dăl),
Relating to the arachnoid membrane, or arachnoidea.

arachnoidal

/arach·noi·dal/ (ar″ak-noi´d'l) pertaining to the arachnoid.

Patient discussion about arachnoidal

Q. What is the treatment for an arachnoid cyst? My 15 year old son has just been diagnosed with an arachnoid cyst. What is the treatment? Is an operation necessary?

A. An operation is not always necessary, it depends on the size and location of the cyst. I suggest you take your son to a neurologist or a neurosurgeon for further consult.

Q. info on arachnoid cyst in the right posterior fossa

A. Basically it's like a small sac filled with fluid. The problem is that the skull is a rigid closed space, which means that if there's something other than the brain, it'll occupy space, usually on expense of the brains' space. These kinds of problems are often referred to as "space occupying lesion".

It's usually congenital (i.e. develops during pregnancy), and even when it cause symptoms they develop slowly.

YOu can read more here (http://en.wikipedia.org/wiki/Arachnoid_cyst)

Q. Is there any problem, if an arachnoid cyst ,2cmx1.5cm size, rostral to cerebellar region left untreated? symptoms: repeated headaches, twitching of muscles, tiredness

A. An arachnoid cyst that leads to symptoms usually needs treatment. Mild symptoms as you suggested are ok to left untreated however gradual onset of new symptoms may arise such as seizures, paralysis and other complications, therefore once symptoms occur one should consider treatment.

More discussions about arachnoidal
References in periodicals archive ?
Indeed, in these cases, bone invasion may also develop by contiguity from a spinal arachnoidal graft.
Chronic subdural hemorrhage into a giant arachnoidal cyst (Galassi classification type IH).
Pacchionian granulations are hypertrophic arachnoidal villi, which can erode through cranial bone, causing lytic lesions on skull roentgenograms or computed tomography (CT) scans.
9-11) One theory postulates herniation of an arachnoidal diverticulum through an incompetent diaphragma sella, the dural lining forming the roof of the sella.
Jennie was born with an arachnoidal cyst on the left side of her brain.
However, arachnoidal cells have been identified outside the neural axis, which may give rise to intratympanic or temporal bone meningiomas.