World Neurosurg
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Case Reports
Spontaneous Intraventricular Hemorrhage: A Rare Presentation of a Skull Base Mesenchymal Chondrosarcoma.
Chondrosarcomas are very rare malignant, slow-growing tumors that develop in or near the petroclival region of the brain. We report a very rare case in which the tumor originated from left petrous bone and induced intraventricular hemorrhage leading to an acute comatose presentation. ⋯ Our experience of petroclival junction chondrosarcoma causing intraventricular hemorrhage may be the first to be documented. Preferred treatment of this highly malignant lesion is radical removal with postoperative radiotherapy.
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The goal of dural arteriovenous fistula of the cavernous sinus treated with coils through ultrasound-guided access to the facial vein is to interrupt the fistulous communications and decrease the pressure in the cavernous sinus and consequently in the ophthalmic veins. The traditional approach in the treatment of these fistulae is transvenous endovascular occlusion of the cavernous sinus. Transvenous embolization has been proven to be safe and can provide complete and permanent occlusion of the fistula in a single session. The most commonly used venous pathway is the inferior petrosal sinus, but, if it is inaccessible, then, the superior ophthalmic vein is considered; nonetheless, it can require a surgical exposure. Other pathways include the transfemoral transfacial vein. An arterial approach is considered usually when venous approach pathways fail. Arterial occlusion of feeders supplying the fistula is associated with a greater risk of embolic complications. ⋯ We propose an alternative pathway when the conventional transvenous approach through the inferior petrosal sinus is excluded. An ultrasound-guided facial vein approach can be considered as a direct and safe alternative to reach the cavernous sinus and obtain exclusion of the fistula.
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Case Reports
Delayed development of aneurysms following gamma knife surgery for trigeminal neuralgia: report of 2 cases.
Delayed development of intracranial aneurysms is an extremely rare complication of gamma knife surgery (GKS), with only 6 cases been reported to date. There are no reported cases after GKS performed to treat trigeminal neuralgia (TN). Of the 6 aforementioned cases, none referred to the natural history or pathophysiology of GKS-related intracranial aneurysm formation. ⋯ Long-term observations are necessary after GKS performed for TN owing to the possibility of formation of intracranial aneurysms near the irradiated region.
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To investigate the common complications from the microsurgical treatment of large intracranial vestibular schwannoma (VS) via suboccipital retrosigmoid approach and to propose strategies for minimizing such complications. ⋯ The key factors for reducing surgical complications include careful assessment of the functions of acoustic and facial nerves as well as a thorough understanding of anatomy via the retrosigmoid approach before operation, skillful microsurgical technique, and monitoring of multiple cranial nerves during resection.
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To examine the risk of bias of methodological quality of reporting randomized clinical trials (RCTs) in major neurology journals before and after the update (2011) of Cochrane risk of bias tool. ⋯ The modified "risk of bias" tool is an improved version for assessment. Methodological quality of reporting RCTs in the 5neurology journals is unsatisfactory, especially that for surgical RCTs, and it could be further improved.