Descriptive Epidemiology of Intracranial Meningiomas for a Hispanic Population in Puerto Rico.

Objective: The epidemiology of meningiomas for patients with Hispanic ethnicity is mainly unknown beyond a few studies. Evidence supporting the ethnic influence over meningioma World Health Organization (WHO) grade is limited. This study aimed to investigate a Hispanic population in Puerto Rico with intracranial meningiomas regarding the WHO grade.

Spontaneous Rupture of a Parietal Arachnoid Cyst Causing an Intracystic Hemorrhage and a Subacute Subdural Hematoma.

Arachnoid cysts are extra-axial cerebrospinal fluid collections located in the arachnoid space that usually do not communicate with the ventricular system. They are commonly found in the middle cranial fossa around the Sylvian fissure. Most of them are asymptomatic, but subdural collections or intracystic hemorrhages can complicate their natural course.