Arachnoid Cyst

Arachnoid cyst is a benign, congenital, CSF-filled cleft within the arachnoid membrane, most often in the middle cranial fossa. Most are asymptomatic incidental findings. Large cysts may cause headache, focal deficits, seizures, or hydrocephalus in children. Treatment: observation/serial imaging if asymptomatic; surgical fenestration or shunting if symptomatic or causing hydrocephalus.

Common Symptoms

Often asymptomatic; headache; seizures; focal deficits; hydrocephalus in children

Causes and Pathogenesis

Congenital splitting of the arachnoid membrane forms a CSF-filled cyst; mass effect when large.

Treatment

Observation/serial imaging; fenestration/shunt if symptomatic

Preventive Measures

Serial imaging; surgery if symptomatic.

Department to Visit

It is recommended to visit the Neurosurgery department; an appointment can be booked on this platform before the visit.

Warm reminder: The above information is for health science reference only and cannot replace professional medical diagnosis. If you have related symptoms, please seek medical attention at a regular hospital promptly.