AIM Arachnoid cysts are benign intra-arachnoid cystic lesions filled with cerebrospinal fluid. With advent of modern treatment techniques, debate continues regarding which surgical treatment is most effective. MATERIAL and METHODS A consecutive series of 75 patients with arachnoid cysts that were surgically treated between January 1992 and December 2009 are reported. Included ...

Arachnoid cysts are rare lesions occurring anywhere in the cerebrospinal axis. The sylvian fissure remains the most favoured site for their occurrence, followed by cerebellopontine angle, suprasellar, and quadrigeminal cisterns. Retroclival arachnoid cysts are very rare. We report a retroclival arachnoid cyst with bilateral cerebellopontine angle extensions with hemifacial spasm in a 26-year-ol...

Arachnoid cysts are congenital lesions developing from arachnoid membrane. The incidence of arachnoid cysts in the general population is around 0.1% and their most common place is middle fossa. Arachnoid cysts usually present during childhood and are identified incidentally. When symptomatic, the most common presentation includes headache and seizure. The popular treatment for this lesion is su...

OBJECTIVES We present a case of a multiloculated third ventricular arachnoid cyst to describe a novel technique for definitive management of these lesions via direct endoscopic fenestration and CSF diversion utilizing separate trajectories that offers superior visualization and avoids forniceal injury. METHODS AND RESULTS We present a case of a 33-year-old woman with progressive headache and ...

Introduction A thunderclap headache is a severe that starts suddenly and may be sign of condition can life threatening. Objective To present case rare cause headache. Case presentation 37-year-old female patient was admitted in the neurological emergence service private hospital city São Paulo. She had sudden, explosive, pulsatile headache, with photophobia phonophobia. The examination no focal...