In order to provide a detailed description of the MR appearance of intracranial ependymoma, the MR examinations of 12 patients (10 with ependymomas and two with subependymomas) were reviewed and correlated with operative and pathologic reports. Three of 10 ependymomas were intraventricular, two were intraparenchymal, and five were transependymal, extending from CSF spaces into parenchyma. Both ...

Gliosarcoma is an unusual malignant neoplasm of the central nervous system. It shares the same clinical presentation, epidemiology and prognosis with glioblastoma multiforme. It is usually located within intraparenchymal compartment, especially in the supratentorial area adjacent to the cortical surface. Intraventricular location is extremely rare for gliosarcoma. We report a rare case of intra...

RESUMO A hidrocefalia é definida como a dilatação ventricular pelo aumento da pressão intraventricular e intracraniana quando não tratada ou por insucesso do tratamento. Muitas vezes, leva ao dano das vias ópticas, podendo causar atrofia óptica, devido à proximidade dessas com o ventrículo lateral ocorre dilatação. Assim pode levar outras patologias também podem. Tumores hipofisários compartilh...

Four cases of choroid plexus papilloma extending through the foramen of Monro are presented. All four patients were evaluated by contrast-enhanced CT and two of these were also evaluated by neurosonography. No other intraventricular tumor commonly extends through a ventricular outlet. The radiographic demonstration of this extension of an intraventricular mass through the foramen of Monro, cere...

The Bruns syndrome is an unusual phenomenon, characterized by attacks of sudden and severe headache, vomiting and vertigo, triggered by abrupt movement of the head. The presumptive cause of the Bruns syndrome is a mobile deformable intraventricular lesion leading to an episodic obstructive hydrocephalus resulted from an intermittent or positional CSF obstruction with elevation of intracranial p...

PURPOSE To characterize the gadopentetate dimeglumine-enhanced MR features of recurrent medulloblastoma. METHODS The postsurgical gadopentetate dimeglumine-enhanced MR images of 48 patients (206 head examinations) with prior resection of medulloblastoma were retrospectively evaluated for enhancement in the brain parenchyma, meninges (dura, pia-arachnoid), and ventricles. RESULTS Nineteen pa...

BACKGROUND Pilocytic astrocytoma (PA) is the most prevalent central nervous system (CNS) tumor in pediatric population and accounts for an approximate of 5-6% of all gliomas. This neoplasm can occur at all levels of the neuraxis, with majority (67%) arising in the cerebellum and optic pathway. PAs are World Health Organization Grade I tumors and are the most benign of all astrocytomas character...

BACKGROUND It is extremely rare to see cerebrospinal fluid dissemination of intraventricular meningioma, particularly with the development of acute, progressive brainstem/cerebellar dysfunction with an absence of mass formation in the corresponding anatomical sites. CASE PRESENTATION An 81-year-old man was admitted because of double vision, right facial nerve palsy and truncal ataxia. Brain m...