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Doctor insights on: Posterior Fossa Cyst

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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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Treatment for Hydrocephalus with posterior fossa cyst & VP Shunt insertion with pyogenic meaningitis?

Treatment for Hydrocephalus with posterior fossa cyst &  VP Shunt insertion with pyogenic meaningitis?

Pyogenic: infection in the face of a VP shunt will inevitably require that the shunt be removed, the infection treated with antibiotics and then the shunt replaced. ...Read more

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I have a posterior fossa arachnoid cyst last known 1.7x 1.6x3cm severe headaches, "pressure" in head epilepsy memory loss confusion&others ..related?

I have a posterior fossa arachnoid cyst last known 1.7x 1.6x3cm severe headaches, "pressure" in head epilepsy memory loss confusion&others ..related?

We usually think not: However, there are cases where arachnoid cysts cause symptoms such as headaches and other types of both cognitive, motor, & cognitive problems which get better when the cyst is removed. But that doesn't happen often. Usually, they're benign & have been there since birth. They don't need to be removed unless testing/examination suggests otherwise. If you'd like a 1-1 consult please let me know. ...Read more

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My gf had a NRM.Diagnose: arachnoid cyst posterior fossa and left maxillary sinusitis.What to do next?Treatment?Complications can apper?

Arachnoid cysts: These are congenital abnormalities often discovered incidentally and nothing need be done unless creating symptoms in which case discuss with a neurosurgeon. Sinusitis can be easily managed if it is acute, but radiologic changes can occur due to old inactive disease. She needs to see her doctor and discuss these things. Why was this imaging study done to begin with? ...Read more

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Hi my husband 38 yrs old, has been suffering with headaches, blurred vision and imbalancing, he had a CT scan and MRI which shows having a arachnoid cyst in the posterior fossa region with mass effect something serious?

Hi my husband 38 yrs old, has been suffering with headaches, blurred vision and imbalancing, he had a CT scan and MRI which shows having a arachnoid cyst in the posterior fossa region with mass effect something serious?

See specialist soon: I am hesitant to answer here for your husband for privacy reasons. But I will provide general comments. 1. Above symptoms happen from the arahnoid cyst with dilation of ventricles (inner chambers inside brain). There may be other reasons as well. 2. I would go see a neurosurgeon or neurologist very soon. Or go to ER for getting admitted to the hospital, so these problems can be addressed sooner. ...Read more

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Hi doctors, can you tell me what is posterior fossa syndrome?

Hi doctors, can you tell me what is posterior fossa syndrome?

Posterior fossa synd: This follows surgical excision of a mass in the Brainstem, showing Aphasia, Mutism, difficulty swallowing, mobility problems, & eye movement issues. ...Read more

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Should 9mm menigioma in posterior fossa be watched or removed.

Should  9mm menigioma in posterior fossa be watched or removed.

Watch it: Many meningiomas don't change in size and it's safe to watch them over time. I would wonder why there was a ct scan or MRI done in the first place; if you were having symptoms that could be related to the meningioma then that might change things but in most cases meningiomas can be safely monitorred over time, and if you can avoid brain surgery you probably should! ...Read more

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Almost 1 year post posterior fossa men. Resection, with complications, i realized recently that I have not sneezed since the surgery. Concerning?

Almost 1 year post posterior fossa men. Resection, with complications, i realized recently that I have not sneezed since the surgery.  Concerning?

Sneezing: Sneezing is typically a response to irritation inside the nose. I doubt the surgery caused this, but not being a neurosurgeon, i don't want to say it cannot happen. It is also possible nothing has caused enough nasal irritation to lead to a sneeze. ...Read more

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What does it mean that the posterior fossa is remarkable for a prominent cisterna magna&prominent masses medial bifrontal regions measuring 15mm?

What does it mean that the posterior fossa is remarkable for a prominent cisterna magna&prominent masses medial bifrontal regions measuring 15mm?

Arnold Chiari: Sounds like an Arnold Chiari Malformation. Which is abnormal development to the cerebellar part of the brain and an increase in the diameter or the foreman magnum or hole that exits the base of the brain. ...Read more

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Explain my anomaly: sup. Sag. Sinus extending into posterior fossa in the midline w/bifurcation into two veins draining into jugular bulbs?

Explain my anomaly: sup. Sag. Sinus extending into posterior fossa in the midline w/bifurcation into two veins draining into jugular bulbs?

Not an issue: You just possess a variation of some of the venous drainage in the brain, and has no pathological significance. Has nothing to do with your headaches or dizziness. Ask you doctor why you possess these issues, and what treatment might help. Maybe see a neurologist. ...Read more

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MRI report reads: fourth ventricle is in midline of the posterior fossa. What does that mean?What follow up is needed? I suffer from chronic headaches

MRI report reads: fourth ventricle is in midline of the posterior fossa. What does that mean?What follow up is needed? I suffer from chronic headaches

Normal....: This is a normal finding. Ventricles in the brain are simply spaces filled with fluid. The location of these spaces are used to determine the brain's location in the skull. The "fourth ventricle" is in the cerebellum the back portion of the brain..the ventricle should be "midline" Your chronic headaches should be evaluated by a headache specialist/neurologist. ...Read more

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What does Mild periventricular and subcortical abnormal T2 andsparing posterior fossa and brainstem mean on mri?

What does Mild periventricular and subcortical abnormal T2 andsparing posterior fossa and brainstem mean on mri?

Nonspecific: Sometimes there are some changes or abnormal signal that we see on MRI in the deeper parts of the brain called the "white matter" that show up on an MRI scan. These changes can be non-specific meaning not diagnostic of any particular diseases or related to narrowing of small vessels or sometimes due to diseases such as multiple sclerosis. Happy to review the MRI through a virtual consult. Best! ...Read more

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What should I expect going into a posterior fossa decompression surgery for chiari 1 malformation? Recovery time? Restrictions?

What should I expect going into a posterior fossa decompression surgery for chiari 1 malformation? Recovery time? Restrictions?

Chiari: Most surgery for chiari malformation is a decompressive operation. Surgery takes 3-4 hours. Hospital stay is usually 1 day in ICU and 1-2 days general care. I would recommend lifting less than 10 pounds for the first 2 weeks and less than 25 pounds after that. You will be asked to not bend your head lower than your waist. Recovery occurs in 6-8 weeks. ...Read more

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Lg area of uptake in rt cerebellopontine angle on cerv spine MRI but not noted in MRI of posterior fossa? Could it be missed? Cpa tumor fits symptoms.

Find a good neurosur: A second opinion from another neurosurgeon may be the next best thing to do. Unless we have access to all mris, we can not give you an opinion. So see another neurosurgeon for his/her opinion. It should not be difficult to sort this out. ...Read more