✓ To investigate overcrowding in the posterior cranial fossa as the pathogenesis of adult-type
Chiari malformation, the authors studied the morphology of the brainstem and cerebellum …

Background The pathogenesis of Chiari malformations is incompletely understood. We
tested the hypothesis that different etiologies have different mechanisms of cerebellar tonsil …

Object Chiari malformation Type I (CM-I) is generally regarded as a disorder of the paraxial
mesoderm. The authors report an association between CM-I and hereditary disorders of …

PURPOSE Our goal was to analyze the anatomic similarity between the duplicated middle
cerebral artery (MCA) and the accessory MCA and their relationship to the early branches of …

Object Following stereotactic radiosurgery (SRS), we examined how to differentiate radiation
necrosis from recurrent malignant glioma using positron emission tomography (PET) with …

The incidences of arterial dissection of the vertebral artery (VA) of aortic origin and VA of
subclavian artery origin were determined. The origins of the left and right VAs were confirmed …

OBJECTIVE: The pathogenesis of CM-I is incompletely understood. We describe an
association of CM-I and TCS that occurs in a subset of patients with normal size of the PCF. …

BACKGROUND Chronic subdural hematoma is known to have a significant recurrence rate.
In this report, we evaluate the relationship between the recurrence rate of chronic subdural …

We describe two cases of acute embolic occlusion of the internal carotid artery and the middle
cerebral artery in association with a patent accessory middle cerebral artery. Because of …

OBJECTIVE AND IMPORTANCE: Few reports have been published on ruptured vertebral
artery dissecting aneurysms in which the posteroinferior cerebellar artery (PICA) arises from …