Publications by authors named "Takaharu Nakamura"

Introduction: Solitary fibrous tumor (SFT) is a mesenchymal tumor with spindle cells that is often detected in the subcutaneous area and rarely in the central nervous system. Intracranial SFTs rarely occur in individuals older than 80 years, and there are only a few cases reports involving the pineal region.

Presentation Of Case: The present case was an 80-year-old man with lightheadedness, headache, and vomiting.

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Background: Cerebral vasospasm (VS) is the most common cause of morbidity and mortality after aneurysmal subarachnoid hemorrhage (SAH). Reversal of VS by intra-arterial infusion of cyclic adenosine monophosphate (cAMP)-elevating agents has been reported; however, the preventive role in the development of VS is not fully understood. This study is designed to evaluate the possible efficacy of using cilostazol, a selective inhibitor of phosphodiesterase type 3 and a cAMP-elevating agent, in patients with SAH.

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Object: Although there is no established treatment for primary central nervous system lymphoma (PCNSL), therapeutic protocols involving high-dose methotrexate therapy followed, in some cases, by whole-brain radiotherapy (WBRT) have generally been adopted, and they have yielded relatively favorable results. Gamma Knife surgery (GKS) is a stopgap measure to treat patients with PCNSL. The authors summarize the results of their cases and evaluate the efficacy and usefulness of GKS.

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Pineal parenchymal tumour of intermediate differentiation (PPTID) in adults is rare and a treatment strategy for this condition has not yet been established. We present a case of an elderly patient treated with postoperative adjuvant therapy using radio- and chemotherapy. This 60-year-old man presented with a 3-month history of memory disturbance, gait instability and double vision.

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Object: The authors performed a retrospective analysis of the radiation dose to the anterior visual pathway (AVP) to assess its tolerance to gamma knife surgery.

Methods: They examined five cases followed for more than 3 years. The AVP was treated with 10-Gy doses or higher.

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Background And Purpose: Complete occlusion of intracranial aneurysms is the goal of endovascular treatment and is influenced by several aneurysm-related anatomic factors. The anatomic features of aneurysms can be characterized by three-dimensional reconstructed images by use of rotational digital subtraction angiography (3D-DSA). The purpose of this study was to determine the anatomic factors that could help predict complete endosaccular packing of cerebral aneurysms by use of 3D-DSA and to design a simple scoring system to predict the difficulty of achieving complete occlusion of the aneurysm.

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Background And Purpose: Although neuroangiography remains the criterion standard standard for the detection of and surgical/interventional planning for cerebrovascular diseases, it usually requires that patients be confined to bed rest for several hours after angiography to prevent local complications. Decreasing catheter size has reduced the risk of hemorrhagic complications associated with early ambulation after angiography. For this study, we prospectively evaluated the clinical feasibility of a 3.

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Objective: Detection of a small residual lumen after coil embolization is often difficult because of the coil mass and the overlap of the cerebral arteries. The purpose of this study was to assess the usefulness of virtual endoscopic (VE) analysis of three-dimensional digital subtraction angiographic (DSA) images for evaluation of aneurysmal occlusion immediately after the procedure.

Methods: Twenty-seven intracranial aneurysms were treated with coil embolization using a three-dimensional DSA system.

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