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Doctor insights on: Surgery For Arachnoid Cyst In Temporal Lobe

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I might have an incidental arachnoid cyst in the posterior fossa & I get chronic nose bleed when I blow my nose from the left nasal im scared from it?

I might have an incidental arachnoid cyst in the posterior fossa & I get chronic nose bleed when I blow my nose from the left nasal im scared from it?

Don't be scared: An arachnoid cyst is something that you were born with and it's location is very far removed and completely unrelated to your nosebleeds. ...Read more

Cyst (Definition)

A cyst is a structure or mass that consists of a cellular lined sac. It is typically filled with fluid but may be filled with solid material. It can be congenital, traumatic, or acquired. They may develop nearly anywhere in the body and usually require complete excision for eradication or they are likely to recur. Fluid filled sacs that are not cellular lined ...Read more


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What can be done for a large arachnoid cyst in the right temporal lobe?

NO: Arachnoid cysts are usually benign and do not cause anysymptoms unless very large and traumatised. ...Read more

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What may a mild mass effect due to an arachnoid cyst in anterior temporal lobe cause behaviorally and cognitively, if anything?

Usually nothing: Often it is an incidental finding that had been there pretty much for life. Rarely, it may cause seizures and much less likely memory problems, etc. but in my experience, for the most part, nothing. ...Read more

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Could a 40mm arachnoid cyst in the right temporal lobe be responsible for changes in personality over a five-year period (for an adult in 40s)?

Could a 40mm arachnoid cyst in the right temporal lobe be responsible for changes in personality over a five-year period (for an adult in 40s)?

Hard to be sure, but: I think this is certainly a possibility. 40mm is a large cyst in an area of the brain that might affect personality. ...Read more

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Hubby fell after headspin.bp 150/100. Ecg echo normal.mri of brain done normal one arachnoid cyst right temporal lobe and eeg normal.3rd day bp 133/91?

Now only concern: His blood pressure (diastolic over 90) , unrelated to his injury he may have hypertension (B P) need to be monitored and take him back for follow up visit and blood pressure check up. ...Read more

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I have an extreme pulsating/tingling sensation in my right temple. I'm a 33 y/o f with an arachnoid cyst at my skull base (benign) with partial seizures in my temporal lobe. I take 200 mg of topamax 2x daily. Hope this helps.?

I have an extreme pulsating/tingling sensation in my right temple. I'm a 33 y/o f with an arachnoid cyst at my skull base (benign) with partial seizures in my temporal lobe. I take 200 mg of topamax 2x daily. Hope this helps.?

Go to the ER: I would imagine that you have been to the emergency room many times in the past. However, in a situation like this, I would not hesitate to order a CT scan of your head if you presented to my emergency room in order to make sure that you do not have hydrocephalus, which can be life-threatening. ...Read more

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Brain CT revealed I have 4-cm sized arachnoid cyst in lt temporal fossa.28 yrs old male with no symptoms except headache once a month. How to deal?

Arachnoid cyst: A 4cm cyst in the temporal fossa with no symptoms would not be surgically treated, headaches are unlikely related to it. ...Read more

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Arachnoid cyst left frontal lobe, what do I do?

Likely nothing: An arachnoid cyst is something that you were born with. In the vast majority of people it will never cause any problems. ...Read more

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I have a chiari 1 malformation, and an arachnoid cyst, how do I know if I am a candidate for surgery?

See a neurosurgeon: Depending on the location of the arachnoid cyst and the degree of cerebellar tonsilar ectopia from your chiari, you may well be a surgical candidate. Posterior fossa arachnoid cysts are a common cause of secondary chiari malformations(if the cyst is large enough to create increased pressure, it can push the bottom of the cerebellum through the foramen magnum, causing the chiari). See neurosurgeo. ...Read more

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I have an arachnoid cyst and a chiari 1 malformation. I know it depends on the person but how likely is it that I will need surgery?

I have an arachnoid cyst and a chiari 1 malformation. I know it depends on the person but how likely is it that I will need surgery?

Only eval will tell: The only way to know if you'll need surgery is your exam by a neurosurgeon who does chiari decompressions. He will thoroughly evaluate your clinical symptoms, physical symptoms, MRI findings and base his opinion on those findings. Most arachnoid cysts do not require surgery as they are present from the beginning of your brain development. See a neurosurgeon and good luck! ...Read more

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Could a small arachnoid cyst on frontal lobe and arachnoiditis from spinal block be related? Don't have arachnoiditis but do have back painafterspinal

Arachnoid cyst: Primary arachnoid cysts are the result of developmental abnormalities in the brain and spinal cord that arise during the early weeks of gestation. Secondary arachnoid cysts develop as a result of head injury, meningitis, or tumors, or as a complication of brain surgery. They are unrelated to your spinal tap. If the pain continues more than a week see the doctor who performed the tap. Good luck. ...Read more

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Will removing arachnoid cyst -3cm-left temp lobe-from psych patient cause change in personality?

Why?: Why would the arachnoid cyst be removed? Arachnoid cysts usually aren't the cause of problems, they're found when doing a scan because of the problem, but are usually not the cause of the problem. Removing the cyst wouldn't be expected to benefit the psych problems or change personality. ...Read more

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About 3x5cm arachnoid cyst, right frontal lobe, no changes for 6 years. Can it cause symtoms now like, headaches, forgeting, musical hallucinations?

See your neurologist: It's best to see your neurologist for an evaluation. Any on-line answer will be superficial. Musical hallucinations and forgetfulness should be evaluated directly by a physician. If the headaches are causing visual problems please go to an emergency room. Hope this helps. ...Read more

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I have been diagnosed with an arachnoid cyst, what can I do besides surgery to live with this?

Likely benign: Arachnoid cysts are congenital lesions and if you have made it into adulthood, it is unlikely to need any intervention. If surgery is recommended, make sure to find out why as unless there are progressive neurological deficits directly attributable to the cyst, surgery is not indicated. ...Read more

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I have cervical hnp and arachnoid cyst(4cm, temporal fossa) can these be connected in any way? Should I check my whole spinal cord for any cyst? Only 28

I have cervical hnp and arachnoid cyst(4cm, temporal fossa) can these be connected in any way? Should I check my whole spinal cord for any cyst? Only 28

Probably not: While there is controversy about the origin of an arachnoid cyst, most believe it is congenital. Unless you have marfan's syndrome (connective tissue disorder) or significant scoliosis there is no direct link to a cervical disc herniation. The link would have more to due with meningeal cysts. I hope this helps. Well wishes. ...Read more

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Incidental arachnoid cyst found in lt temporal fossa 4cm in diameter. Does arachnoid cyst have anything with limaprost, prostaglandin and nsaids?

Arachnoid cyst: No. Arachnoid cysts of the temporal fossa are common findings on MRI studies. They are congenital (from birth) and usually without symptoms. Medications do not cause arachnoid cysts to form. ...Read more

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I have dizzyness and nausea with ringing in my ear and an arachnoid cyst and chiari 1 malformation will I need surgery?

I have dizzyness and nausea with ringing in my ear and an arachnoid cyst and chiari 1 malformation will I need surgery?

Not necessarily: The dizziness and nausea are not really classic symptoms of a chiari malformation nor arachnoid cyst. But this opinion would really need to be given by a neurosurgeon who is also reviewing your MRI of your brain. See a local neurosurgeon for a full evaluation and surgical opinion. ...Read more

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What to do if I have a cyst in my brain. Arachnoid cyst with hollowness on my face?

What to do if I have a cyst in my brain. Arachnoid cyst with hollowness on my face?

Arachnoid cyst: Not sure what you mean by "hollowness" of the face but likely not related to the arachnoid cyst which are fairly common and in many cases not symptomatic. ...Read more

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Would an Arachnoid cyst on the back of my son's brain be the reason the top of his head is a cone shape?

Would an Arachnoid cyst on the back of my son's brain be the reason the top of his head is a cone shape?

Unrelated: Head shape is unrelated to arachnoid cyst. Skull shape is created by sutures between cranial bones. Premature closure of metopic suture- in forehead area can create a cone or triangular shaped head. More about arachnoid cysts
https://rarediseases.org/rare-diseases/arachnoid-cysts/
More about skull shape craniosynostosis
http://www.childrenshospital.org/conditions-and-treatments/conditions/metopic-synostosis-trigonocephaly ...Read more

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Scan at 32 wk shows arachnoid cyst 6.5 * 2.5 CM in brain. On follow up scan at 34 weeks its size is 7.5* 2.8cm with slight compression. What to do?

Scan at 32 wk shows arachnoid cyst 6.5 * 2.5 CM in brain. On follow up scan at 34 weeks its size is 7.5* 2.8cm with slight compression. What to do?

Wait: At 34 weeks birth is coming soon. Baby will need to be evaluated once born with ultrasound and MRI to ascertain the exact anatomy. Surgical correction may need to done after neurosurgical evaluation. ...Read more

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What can be done for an arachnoid cyst on the brain?

Need for treatment : Depends on size & location of arachnoid cysts & whether they cause neurological symptoms from pressure on underlying brain tissue. Neurosurgeons perform minimally invasive micro neurosurgical endoscopic procedures to remove membranes of a cyst or open a cyst so its fluid drains into the normally flowing cerebrospinal fluid. See www.ninds.nih.gov/disorders/arachnoid_cysts/arachnoid_cysts. ...Read more

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Pressure at front of brain, arachnoid cyst, what to do?

See a neurosurgeon: You are blessed by the time & place in which you live. Boston abounds with excellent neurosugeons with expertise in microneurosurgery, minimally invasive endoscopic techniques, for treating symptomatic arachnoid cysts. Seek referral to one or two of them from your primary care physician. See http://www.ninds.nih.gov/disorders/arachnoid_cysts/arachnoid_cysts.htm ...Read more

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5 yr old with an arachnoid cyst on his brain. Is this disease treatable?

5 yr old with an arachnoid cyst on his brain. Is this disease treatable?

Yes: See a pediatric neurosurgeon. Most likely will recommend a shunt procedure to drain cyst. Depends on the anatomy and location. ...Read more

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What to do if I have an arachnoid cyst in my brain I need to know more about it help?

What to do if I have an arachnoid cyst in my brain I need to know more about it help?

Consult neurologist: You need to be followed by a neurologist or neurosurgeon to determine if there is a change in the size of the cyst or if it impinges on vital structures, needing intervention ...Read more

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Had an MRI and found arachnoid cyst-left front of brain and chiari 1 mailformation. Should I be worried about my life?

Had an MRI and found arachnoid cyst-left front of brain and chiari 1 mailformation. Should I be worried about my life?

Not life threatening: Most arachnoid cysts and chiari 1 malformations are incidental findings on mris when patients are being worked up for headaches or other symptoms. A chiari 1 is when the cerebellar tonsils at the base of the brain lie low and slip through the hole at the base of the skull. Symptoms can include headache, numbness or ataxia (unsteadiness). Most chiari 1s do not need to be treated. ...Read more

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I have an arachnoid cyst&get complex migraines very frequently past EEG has shown narrowing of the ventricles in my brain, are they caused by the cyst?

Probably unrelated: Many normal people have arachnoid cysts. Many normal people have narrow ventricles on ct or mri. These are incidental and unrelated findings. Migraine is a physiological reaction to stress. It sounds that the cyst and ventricle issues are unrelated to your migraine. ...Read more

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I have an arachnoid cyst on the left side of my brain and have started getting headaches and dizzy spells? What shall I do?

I have an arachnoid cyst on the left side of my brain and have started getting headaches and dizzy spells? What shall I do?

Treat headaches: The arachnoid cyst is likely congenital and creating no problems, whatsoever, unless images are indicative of increasing size and mass effect. The headaches and dizzy spells could be of migrainous origin, but could be triggered by a host of problems such as dental, jaw, sinus, neck, etc. Try to symptomatically treat and discuss cyst with your doctor. ...Read more

Lobe (Definition)

1. A rounded projection, especially a rounded, projecting anatomical part. (for example, the lobe of an ear) 2. A subdivision of a bodily organ or part bounded by fissures, connective tissue, or other structural boundaries. (for example, a ...Read more


Dr. Alan Jacobs
96 doctors shared insights

Arachnoid Cyst (Definition)

Arachnoid cyst = collection of fluid within the arachnoid membrane - which covers the ...Read more