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OBJECTIVE Olfactory groove meningiomas account for 8 to 13% of all intracranial meningiomas. Surgical removal is often performed through the bifrontal, unilateral subfrontal (frontolateral), or pterional approach. We report on the clinical outcome and recurrence rate after surgical treatment of olfactory groove meningiomas in our neurosurgical department.(More)
OBJECTIVE Tuberculum sellae meningiomas present a special challenge because of their proximity to arteries of the anterior circulation, anterior visual pathways, and the hypothalamus. The authors report on the clinical outcome after surgical treatment of tuberculum sellae meningiomas in our neurosurgical department. METHODS A retrospective study was(More)
OBJECTIVE The concept of neurovascular decompression for the treatment of hemifacial spasm is now widely accepted. In this study, we report our long-term results for 145 cases treated with this procedure. METHODS The results of 145 microvascular decompressions to treat hemifacial spasm (performed between 1980 and 1998) among 143 patients (62.2% female(More)
BACKGROUND Primary intraventricular meningiomas are notably rare with an incidence of 0.5 to 3% among all intracranial meningiomas. We present a series of 16 patients with histologically verified intraventricular meningiomas, the clinical and neuroradiological findings, and surgical results. METHODS The charts of the patients including surgical records,(More)
The purpose of this study was to investigate experimentally, factors determining the navigation accuracy of the MKM navigation system by Zeiss. The MKM consists of an operating microscope mounted to a six-axis motor-driven robot arm and an alpha-workstation. The image-guided surgery device provides navigation information based on calculation of the(More)
BACKGROUND Sphenoid wing meningiomas (SWMs) with osseous involvement are neurosurgically challenging because of their position within the skull base and their high rates of recurrence. Sufficient resection of these meningiomas requires extensive surgical exposure. We report on 82 patients with meningiomas infiltrating the sphenoid wing, analyzing(More)
A 24-year-old female presented with a 3-year history of a suprasellar and intraventricular solid midline process measuring about 3×4 cm. At surgery, this tumour was sharply delineated and of stone-like firmness and was removed completely. Histology suggested meningioma, featuring nests and cords of epithelium-like cells with prominent cytoplasm amidst(More)
Twenty-five meningiomas located at the tentorial notch were surgically treated between 1978 and 1993 at the Neurosurgical Department of Nordstadt Hospital in Hannover, Germany. Nineteen meningiomas were classified as originating from the lateral tentorial incisura (Group I) and six were from the posteromedial tentorial incisura (Group II). Clinically, the(More)
With only four histologically proven cases in the literature, solitary skull base metastasis of thyroid carcinoma is extremely rare. Having treated another patient harboring a lesion with osseous destruction in the petroclival region and downward soft tissue extension we analyzed this case in conjunction with previous reports. In contrast to parenchymal(More)
Background. The aim of this study is to assess the morbidity and mortality of meningioma surgery in patients over 70 years of age harbouring a tumour at the cerebellopontine angle as one representative location of the posterior fossa in comparison with a matched group of young patients. Method. A retrospective analysis based on clinical charts, surgical(More)