meningioma/edema

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

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

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

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

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

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

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

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

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

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

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

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,

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

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