Pathologies Arachnoid cysts

Any patient diagnosed with a brain arachnoid cyst should consult an experienced neurosurgical department. If you have any questions, please contact our team.

They are non-neoplastic cysts formed by arachnoid (normal tissue that covers the brain). They can be congenital or acquired (e.g., due to head trauma).
They are most frequently located in the middle fossa (49%), cerebellopontine angle (11%), sellar and suprasellar regions (10%), and posterior fossa in the vermian region (9%) and interhemispheric (5%).
Clinical manifestations begin in childhood and can be mild or insidious, depending on the location. They are sometimes asymptomatic and are detected incidentally.
Middle fossa cysts are characterized by headache, seizures, hemiparesis, and speech disorders, and may also present with symptoms of intracranial hypertension in large cysts. Cysts in the sellar region may present with symptoms of intracranial hypertension, vision loss, endocrinological alterations, neurodevelopmental delay, head bobbing, and associated non-communicating hydrocephalus. Pediatric patients are at increased risk of developing an arachnoid cyst complicated by a tense subdural hygroma or an acute subdural hematoma, both of which require urgent neurosurgical resolution.

If you experience these clinical manifestations, contact our team immediately.

Specific brain CT and MRI are used to assess the size, location, and relationship to neighboring structures.
Most children with a cerebral arachnoid cyst will require follow-up by a neurosurgeon, without the need for surgical treatment.
In some cases, surgical treatment may be indicated. A communication in the cyst membrane is necessary, and its evacuation is achieved using microsurgical or endoscopic techniques.

Our team is a pioneer in minimally invasive techniques for the diagnosis and treatment of brain tumors. We are at the forefront and always seeking new alternatives that allow for better treatment and a definitive cure.