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BACKGROUND The authors present a retrospective clinical analysis of meningeal hemangiopericytomas. The long-term outcome and biologic behavior, including local recurrence and extraneural distant metastasis, are elucidated. METHOD Clinical records and radiologic findings of 31 cases with meningeal hemangiopericytoma treated at Seoul National University(More)
Mesenchymal stem cells (MSCs) have an extensive migratory capacity for gliomas, which is comparable to that of neural stem cells. Among the various types of MSCs, human adipose tissue-derived MSCs (hAT-MSC) emerge as one of the most attractive vehicles for gene therapy because of their high throughput, lack of ethical concerns, and availability and ease of(More)
The authors present the experience of ligation of transverse or sigmoid sinus in the surgical removal of petroclival meningiomas. We reviewed the medical records and venograms of 14 patients with petroclival meningiomas, in whom the intraoperative ligation of transverse or sigmoid sinus had been done at our hospital between 1986 and 1999. All patients(More)
Olfactory neuroblastomas are known to be rare and clinically malignant tumors. The authors analyzed the clinical features, long-term treatment outcomes, and prognostic factors related to 21 cases of olfactory neuroblastomas, treated between January 1979 and October 2000, retrospectively reviewed with medical records and radiologic findings. The mean(More)
OBJECTIVE The purpose of this study is to analyze anterior communicating artery (AComA) aneurysm morphology and its relationship to the limitations and feasibility of endovascular coil embolization. METHODS One hundred twenty-three patients were treated with endovascular coil embolization for AComA aneurysms. Aneurysm morphology was classified into six(More)
We report an unusual case of lateral medullary infarction after successful embolization of the vertebral artery dissecting aneurysm (VADA). A 49-year-old man who had no noteworthy previous medical history was admitted to our hospital with a severe headache. Computed tomography (CT) revealed a subarachnoid hemorrhage, located in the basal cistern and(More)
Subependymoma is a rare, slow growing, rarely recurrent tumor. We report a case of re current subependymoma with subependymal seeding. An intraventricular tumor in the left temporal horn was detected in a 48-year-old female who presented with a 4-year history of dizziness and memory disturbance. Following near total surgical resection, a tumor diagnosis of(More)
We evaluated the safety and efficacy of stent-assisted coil embolization for wide-necked unruptured intracranial aneurysms (UIA) based on the results observed in consecutive patients in a single center. This study included 116 patients (29 men, 87 women; mean age, 55.4 years) with 121 UIA which were treated by stent-assisted coil embolization from November(More)
The authors present guidelines for the ligation of the transverse or sigmoid sinus during the surgical removal of petroclival meningiomas. The medical records and venograms of 14 patients with a petroclival meningioma requiring transverse or sigmoid sinus ligation treated in the Department of Neurosurgery, Seoul National University Hospital between 1986 and(More)
Vestibular schwannomas (VSs) are relatively slow growing tumors. However, some rapidly regrow or recur after surgical resection. The objective of this study was to identify those molecular characteristics predicting rapid recurrence after surgical resection. Immunohistochemically determined expressions of several cell cycle regulators and(More)