meningioma/edema

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High incidence of transient perifocal edema following upfront radiosurgery for intraventricular meningiomas.

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Intraventricular trigonal meningiomas (ITM) seem to have a tendency for extensive perifocal edema formation following radiosurgery (RS). To further investigate this hypothesis, we undertook the following study.We retrospectively reviewed records of patients

Peritumoral edema following Gamma Knife radiosurgery as the primary treatment for intraventricular meningiomas.

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Intraventricular meningiomas represent a small proportion of intracranial meningiomas. Stereotactic radiosurgery (SRS) as a primary treatment for intraventricular meningiomas has been reported only recently. We present two patients with trigonal meningiomas who developed peritumoral edema 5months

Cerebral edema associated with meningiomas: the role of peritumoral brain tissue.

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We undertook a morphological study of small pieces of peritumoral brain tissue removed from seven patients with meningiomas submitted to surgery. All patients had cerebral edema, as shown by preoperative C.T. and N.M.R.. Control specimens were obtained from five patients undergoing

The effect of hyperbaric oxygen on clinical outcome of patients after resection of meningiomas with conspicuous peritumoral brain edema.

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OBJECTIVE The goal of this study was to determine the effect of hyperbaric oxygen therapy on the clinical outcome of patients after resection of meningiomas with conspicuous peritumoral brain edema (PTBE). METHODS 232 patients with intracranial meningiomas and conspicuous PTBE were allocated to the

[Evaluation of peritumoral brain edema in intracranial meningiomas using CT perfusion imaging].

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OBJECTIVE To evaluate the perfusion characteristics of the peritumoral brain edema of intracranial meningiomas using 16-slice spiral CT perfusion imaging. METHODS Dynamic contrast-enhanced single-location sequence CT scan was performed in 19 patients with intracranial meningiomas and peritumoral

Intracranial meningiomas: correlation of peritumoral edema and psychiatric disturbances.

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Patients with proven intracranial meningioma were reexamined for psychiatric morbidity. Distribution according to type of meningioma was as follows: 72% convexity meningiomas and 28% base-of-skull meningiomas. No psychiatric disorders were diagnosed in the nonconvexity group in contrast to 44% in

Severe Edema and Venous Congestion Following Sphenoorbital Meningioma Resection in a Meningiomatosis Case: Importance of Predicting Venous Disturbances.

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To achieve local disease control, radical removal is the best option for sphenoorbital meningiomas. Preservation of the venous system is crucial during the resection of skull base meningiomas. This vascular injury represents a major risk both for life and neurologic function. We present a case of a

Prognostic value of peritumoral edema and angiogenesis in intracranial meningioma surgery.

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OBJECTIVE In a series of 78 consecutive patients we analyzed the influence of peritumoral edema (PTE) and angiogenesis (vascular endothelial growth factor/ VEGF expression) on the prognosis of morbidity and postoperative complications after intracranial meningioma surgery. METHODS A retrospective

[Brain edema in meningiomas: radiological and histological factors].

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Many factors have been associated to the development of peritumoral edema in meningiomas. We studied the radiological and pathological features of 51 intracranial meningiomas surgically treated in the University Hospital of the Federal University of Rio de Janeiro. Two thirds of the meningiomas in

Biological features of meningiomas that determine the production of cerebral edema.

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Although meningiomas are known to cause varying degrees of cerebral edema, the relative importance of their location, size, histological subtype, and other histological features in the production of cerebral edema has not been studied adequately. Therefore, we undertook a retrospective analysis of

Severe brain edema caused by a meningioma obstructing cerebral venous outflow and treated with venous sinus stenting. Case report.

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Peritumoral edema is a common feature of cerebral meningiomas, but venous outflow obstruction is not normally considered as a cause even when a tumor involves the venous sinuses. The authors describe a patient with a ventricu-loperitoneal shunt in situ, who had undergone several debulking operations

Tenascin in meningioma: expression is correlated with anaplasia, vascular endothelial growth factor expression, and peritumoral edema but not with tumor border shape.

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OBJECTIVE Tenascin is an extracellular matrix glycoprotein that is expressed during embryogenesis, inflammation, angiogenesis, and carcinogenesis. The aim of this study was to investigate how tenascin expression relates to histological grade, angiogenesis, and radiological findings in

Expression of aquaporin-4 in human supratentorial meningiomas with peritumoral brain edema and correlation of VEGF with edema formation.

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Peritumoral brain edema is a common complication of meningiomas. It is believed that vascular endothelial growth factor (VEGF), as an angiogenic factor, plays a vital role in edema formation. Aquaporin-4 (AQP4) is a small integral membrane protein that regulates water in the normal brain. However,

Peritumoral brain edema in meningiomas: correlations between magnetic resonance imaging, angiography, and pathology.

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BACKGROUND The purpose of this study was to evaluate the radiologic characteristics and pathology related to the formation of peritumoral edema in meningiomas. METHODS Seventy-nine patients with meningioma were examined by MRI and cerebral angiography. The predictive factors possibly related to

Brain edema in meningiomas is associated with increased vascular endothelial growth factor expression.

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OBJECTIVE Vascular permeability factor/vascular endothelial growth factor (VPF/VEGF), an endothelial cell-specific cytokine, induces proliferation of endothelial cells and increases vascular permeability dramatically. All gliomas secrete significant amounts of VEGF, whereas meningiomas are variable

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