oligodendroglioma/edema

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Grade II oligodendroglioma localized to the corpus callosum.

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The presence of a primary central nervous system (CNS) neoplasm within the corpus callosum generally portends a grave prognosis. Common pathologies encountered include glioblastomas and primary CNS lymphomas. In contrast, World Health Organization grade II oligodendroglial tumors demonstrating loss

[Reappraisal of the Sainte-Anne Hospital classification of oligodendrogliomas in view of retrospective studies].

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OBJECTIVE Definition of homogeneous tumor groups of oligodendrogliomas or oligo-astrocytomas is a basic condition for an adequate evaluation and comparison of the results of treatments in patients from various institutions. However, increasing discordances are observed in the histological diagnosis

Intracranial oligodendrogliomas: imaging findings in 35 untreated cases.

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The radiographic findings in 35 cases of untreated intracranial oligodendrogliomas were reviewed. The mean age of the patients was 34.6 years, and seizure disorder and headache were the most frequent presenting symptoms. Slightly less than two-thirds of the tumors were histologically pure and almost

Oligodendroglioma and juvenile pilocytic astrocytoma presenting as synchronous primary brain tumors. Case report with histological and molecular differentiation of the tumors and review of the literature.

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Multiple metastatic brain tumors and multifocal primary brain tumors of a single histological type are well described in the literature. The concurrent presence of multiple primary brain tumors with different histological characteristics, however, is very rare. The authors describe the first known

The influence of carmustine wafer implantation on tumor bed cysts and peritumoral brain edema.

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The development of perifocal edema and tumor bed cyst has been reported after implantation of biodegradable carmustine wafers for the treatment of malignant gliomas. We retrospectively evaluated these changes in a series of patients; 19 consecutive patients with malignant glioma who received

Oligodendroglioma--a case presentation.

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Cerebral oligodendroglioma is a rare form of malignant tumor. Oligodendroglioma represents 5% of all gliomas. Our patient is a 12 1/2-year-old white female who presented with suddent onset of disc edema, esotropia, and field loss, who 2 weeks before had a normal fundus. The diagnosis is right

Pediatric and adolescent oligodendrogliomas.

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OBJECTIVE To review the clinical and imaging findings in pediatric and adolescent intracranial pure oligodendrogliomas. METHODS The clinical, CT, and MR data in 39 surgically proved pure oligodendrogliomas were retrospectively reviewed. RESULTS The frontal or temporal lobes were involved in 32 (82%)

Superficially-located oligodendroglioma associated with intratumoral and peritumoral cysts--case report.

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A 72-year-old male presented with a superficially-located oligodendroglioma associated with intratumoral and peritumoral cysts. Neuroimaging showed the outer cyst wall as enhanced but not the inner cyst wall. The outer cyst was removed and a biopsy taken of the solid component. The inner cyst wall

[Pediatric supratentorial oligodendrogliomas: Marseilles and Lyons experiences].

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OBJECTIVE The goal of this study was to analyze the main aspects of oligodendrogliomas observed in children. METHODS The records of 35 children aged 15 years or younger (23 from Marseilles and 12 from Lyons) were reviewed. Clinical signs and symptoms, imaging findings (CT scan and pre- and

[A Case of Subcortical Intracerebral Hemorrhage Caused by Underlying Oligodendroglioma Diagnosed through Long-Term Follow-Up].

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We report on a case of an oligodendroglioma that caused intracerebral hemorrhage, which was diagnosed by long-term follow-up. An 82-year-old man with underlying hypertrophic cardiomyopathy presented with weakness in the right upper extremity. Computed tomography and magnetic resonance

Association of oligodendroglioma-like cell proliferation and angiomatous vasculature--coincidence or pathogenetically related lesions?

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We report a case of an oligodendroglioma associated with a cavernous angioma. The patient, a 20-year-old man with an 8-year history of epileptic seizures, presented an acute onset of headache, nausea, and vomiting. Computerized tomographic scan and angiogram revealed multiple vascular malformations

Experimental brain tumors and edema in rats. I. Histology and cytology of tumors.

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In this study an experimental intracerebral tumor has been investigated with special consideration of structures, which may be involved in edema production and/or resolution. For this purpose a cloned tumor cell line (RG1 2.2) has been injected stereotactically into the brain of BD-IX rats. The

Cyclooxygenase (COX)-1 expressing macrophages/microglial cells and COX-2 expressing astrocytes accumulate during oligodendroglioma progression.

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Cyclooxygenases (COX, prostaglandin endoperoxide synthases, PGG/H synthases) are potent mediators of edema, impeding blood flow and immunomodulation in the pathologically altered brain. Two COX iso-enzymes have been associated with brain disease, the constitutively expressed COX-1 and the

The utility of MR in planning the radiation therapy of oligodendroglioma.

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Newer methods of radiation therapy for treating oligodendroglioma after surgical resection have produced promising results using high doses of radiation. However, these doses are close to those that cause necrosis of normal brain, making the accurate spatial localization of tissue at risk for

Sudden unexpected death from oligodendroglioma: a case report and review of the literature.

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Sudden and unexpected deaths due to asymptomatic 5 primary brain tumors are extremely rare, with an incidence that ranges from 0.16 to 3.2%. Usually, such tumors are glioblastomas or, less commonly, astrocytomas. Asymptomatic oligodendrogliomas causing sudden death are hardly ever reported among

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