World Neurosurg
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Arteriovenous malformations (AVMs) of the superior vermis, superomedian cerebellum, and tectum are uncommon lesions. Various routes have enabled accessing the precentral cerebellar fissure and the posterior incisural space. ⋯ The OITT is a valuable approach for specific superior vermian, superomedian cerebellar, and tectal AVMs. Detailed assessment of angiographic features may however preclude its safety as a unique treatment plan, and complementary or alternative therapeutic options should be considered.
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Transvenous coil embolization of the affected venous outlet is the most effective treatment method for the management of nontraumatic adult dural arteriovenous fistulas (DAVFs). However, such an approach is not always feasible. We discuss nontraumatic adult DAVFs that were treated with transarterial coil embolization of the proximal venous outlet at our facility, as well as cases previously reported in the literature. ⋯ If a distally enlarged feeding artery is observed among the multiple feeding arteries, it suggests the existence of a large fistula and may serve as an access route for transarterial venous coil embolization. This procedure may offer a more effective and safer treatment than other endovascular approaches.
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This study sought to describe a single institution's experience treating arteriovenous malformations (AVMs) of the basal ganglia, thalamus, and insula in a multimodal fashion. ⋯ Modern treatment of deep AVMs includes a multidisciplinary approach utilizing microsurgery, SRS, embolization, and observation. Supplementary grading adds meaningfully to traditional Spetzler-Martin grading to guide patient selection. Surgical resection is more likely to result in obliteration compared with SRS, and is associated with satisfactory results in carefully selected patients.
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Temporary artery occlusion (TAO) during intracranial aneurysm surgery is a key element in facilitating aneurysm dissection and clipping. Despite its significance, knowledge of its effects on long-term clinical outcome in patients undergoing elective clipping for unruptured aneurysms is limited. This study evaluated the safety of this technique in this patient population by 1 surgeon. ⋯ This study did not demonstrate any relationship between limited duration of TAO and clinical outcome. Posterior circulation aneurysms are associated with worse long-term clinical outcomes in patients with electively clipped, unruptured aneurysms.
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Hunterian ligation is performed to reduce and to change the flow of an aneurysm; it is a surgical option for a complex aneurysm that cannot be managed by either clipping or coiling. However, it may be associated with adverse effects. This study was carried out to analyze how Hunterian ligation changed the flow dynamics of a particular cerebral aneurysm. ⋯ Hunterian ligation is a useful flow diversion surgery, but it might worsen the flow dynamics in specific cases.