No abstract available.
Hemangioma*

Intracranial nerve sheath tumors unrelated to the cranial nerve roots are extremely rare, and the origin of the tumors are debatable. We report a case of pathologically-proven neurofibroma inside the lateral ventricle. A 49-year-old man presented with headache of 6 months duration, urinary incontinence, visual disturbance and right hemiplegia. Brain CT scan showed a well defined isodense mass with homogenous contrast enhancement and marginal calcification. At surgery the tumor was found to be a 4cm-sized lobulated mass attached only to the choroid plexus. Histologically, the tumor masses consisted of fasciculating bundles of wavy spindle cells, with a considerable collagen laydown.
Brain ; Choroid Plexus ; Collagen ; Cranial Nerves ; Headache ; Hemiplegia ; Humans ; Lateral Ventricles ; Middle Aged ; Nerve Sheath Neoplasms ; Neurofibroma* ; Tomography, X-Ray Computed ; Urinary Incontinence

The authors present a case of central neurocytoma in right lateral ventricle. Central neurocytoma is a rare clinicopathological entity that has been recently recognized and is characterized by 1) intraventricular location, 2) predominant occurance in young adults, 3) oligodendroglioma-like histology, 4) benign course, 5) immunohistochemical and ultrastructual evidence of neuronal differentiation. Twenty one year old female patient was admitted to the Department of neurosurgery of Chung Ang Gil hospital because of diplopia and headache which developed and progressed gradually 2 months prior to admission. The neurological examination showed paresis of right lateral rectus muscle, bilateral optic papilledema, nystagmus and mild left hemiparesis. MRI scan showd an intraventricular tumor of lateral ventricle that had isosignal and high signal intensity with cortex on T1-and T2-weighted and proton density images, respectively. Serpiginous flow voids representing blood vessels in the tumor were seen an all pulse sequences.
Blood Vessels ; Diplopia ; Female ; Headache ; Humans ; Lateral Ventricles* ; Magnetic Resonance Imaging ; Microscopy, Electron ; Neurocytoma* ; Neurologic Examination ; Neurons ; Neurosurgery ; Papilledema ; Paresis ; Protons ; Young Adult