World Neurosurg
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Meta Analysis
Penetrating Vertebral Artery Injuries: A Literature Review and Proposed Treatment Algorithm.
Penetrating vertebral artery injuries (VAIs) are rare but devastating trauma for which the approach to treatment varies greatly. The literature on treatment modalities is limited to case reports, case series, and 1 review, with the majority of cases being treated surgically. However, with the advent of digital subtraction angiography, treatment has shifted toward less invasive endovascular modalities that allows one to assess the flow and risks of sacrificing the vertebral artery (VA). ⋯ This systematic review not only details the updated treatment options but also provides a decision algorithm for the treatment of penetrating VAI. It highlights the shifting treatment options of penetrating VAI to endovascular therapy, as well as details VAI variants that may suggest stenting over embolization.
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Arachnoid cysts are benign cerebrospinal fluid collection within a duplication of arachnoid membrane and, when found in the retrocerebellar site, they may be associated with tonsils herniation. This rare situation of coexisting retrocerebellar arachnoid cyst (AC) and Chiari malformation type 1 (CM-1) have been previously reported in few cases (10 patients) with syringomyelia and hydrocephalus described to be the most relevant issues. The aim of this paper is to describe 3 pediatric cases of this condition with a systematic review of the literature, underlining the importance of surgical management tailored to the pathogenic mechanism. ⋯ Surgical management of coexisting ACs and CM-1 should not aim at the complete resolution of the cyst or of tonsil herniation, especially when pediatric patients are treated. Rather, the purpose of the neurosurgeon should be to understand the underlying pathogenic mechanism, and then restoring both the cerebrospinal fluid flow in the posterior fossa and the dynamic equilibrium between ventricles, cyst, and subarachnoid space.
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Cranial surgical site infections (cSSIs) are associated with significant morbidity. Measures to reduce cSSI are necessary to reduce patient morbidity as well as hospital costs and resource utilization. ⋯ The strength of the conclusions is limited by small sample sizes, study heterogeneity, relatively low cSSI incidence, and high case variability. Some evidence supports the use of intraoperative vancomycin powder in adult noncranioplasty cases and the application of accountability, teaching, and surveillance of faculty, particularly those early in training.
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The anatomy and spatial relationships of the dural sac comprising the Meckel cave (MC) and its ensheathed trigeminal ganglion (TG) are exceedingly intricate and complex. There are conflicting accounts in the literature regarding the dural configuration of the MC around the ganglion and the dual embryology of the MC and TG is still unclear. ⋯ Sound knowledge concerning the dural arrangement of the MC and the trigeminal divisions will be invaluable in optimally treating cancers in this region, and understanding TG somatotopy will immensely improve treatment of trigeminal neuralgia in terms of specificity, efficacy, and positive patient outcomes.
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Primary fourth ventricle outlet obstruction (PFVOO) is a rare cause of hydrocephalus with an unclear etiopathogenesis, and thus, consensus regarding the recommended treatment protocol is lacking. This study aims to summarize current knowledge of this condition in the light of our own treatment experience. ⋯ Despite the fact that PFVOO can be defined as an obstructive hydrocephalus, there seems to be a higher risk of ETV failure in such cases. The alternative treatment modalities presented are still recommended. Confirmation of these findings requires a larger multicenter study.