Cummins, Taveras, and Schlesinger (1960) have emphasized again the high mortality rate associated with surgical exploration of lesions in the region of the posterior third ventricle. However, there are certain benign processes which occur in this area which require definitive surgical treatment rather than shunting procedures and/or radiation therapy, and the successful management of obstructin...

Intracavernous sinus arachnoid cysts are rare intracranial congenital lesions. When present, their anatomic location frequently results in cranial nerve palsy. A 15-year-old boy was admitted to our hospital with diplopia, which had gradually worsened over the previous several months. An arachnoid cyst was identified within the right cavernous sinus and fenestration surgery was performed. The pa...

We report the case of 22-year-old man with nontraumatic intracystic hemorrhage into a middle cranial fossa arachnoid cyst associated with a contiguous subacute subdural hematoma. Arachnoid cysts are benign intra-arachnoidal fluid collections frequently detected incidentally during neuroimaging. Rare complications of arachnoid cysts such as intracystic hemorrhage or subdural hematomas and subdur...

A 35-year-old female nurse presented with an 8-month history of headaches often precipitated by valsalva type maneuvers. The patient occasionally experienced tingling in her face and left arm associated with several episodes of blurred vision. The neurologic exam was normal as was the electroencephalogram. Plain skull films showed asymmetric pneumatization of sphenoid sinus (Fig. 1A). Computed ...

A giant arachnoid cyst (63 83 11 cm) of left middle cranial fossa was found incidentally in a 3-year-old boy with head MRI examination for increased head circumference (figure 1). Surgical intervention was refused by his parents since the boy was asymptomatic, and the patient was followed up. Repeated MRI performed 2 years later revealed disappearance of the cyst, and the compressed brain tissu...

OBJECTIVE A rare case of cerebellopontine angle arachnoid cyst manifesting as hemifacial spasm (HFS) is reported. The patient is a 42-year-old woman with 10-month history of left HFS. A preoperative magnetic resonance imaging scan showed a well-demarcated area, hypointense on T1-weighted imaging and hyperintense on T2-weighted imaging, in the left cerebellopontine angle, without contrast enhanc...