World Neurosurg
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Preoperative tumor-related edema of the optic tract (EOT) is often found along the white matter tract of the visual system. However, the relationship of EOT with visual function and outcome remains unclear. Therefore we aimed to elucidate whether the presence of EOT is associated with visual outcome in patients with sellar and suprasellar tumors. ⋯ This study reveals that EOT caused by sellar and suprasellar tumors is associated with worse visual function and poor improvement postoperatively.
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To evaluate the clinical results and factors related to the resolution of preoperative cranial neuropathy after internal carotid artery ligation with high-flow bypass in patients with symptomatic large or giant cavernous carotid aneurysms. ⋯ Early treatment is recommended when treating large or giant cavernous carotid aneurysms with cranial neuropathy. Complete resolution is possible in younger patients with partial neuropathy.
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To evaluate whether use of partial nondepolarizing neuromuscular blocking agents, at a train-of-four level 1, compromise facial nerve monitoring during vestibular schwannoma (VS) resection. ⋯ Although mean stimulation threshold to elicit a response amplitude was higher in the peripheral neuromuscular blockade group than in the free of neuromuscular blockade group at the proximal site, the stimulation thresholds in both groups were sufficient for facial nerve monitoring in VS surgery, indicating no clinical difference in both groups.
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We evaluated the technical feasibility and potential advantages of transcranial insertion of an atlas screw for atlantoaxial fixation. ⋯ Transcranial insertion of atlas screw can be used as a salvage procedure when the conventional method of screw insertion is not possible because of technical difficulties.
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The anterior transpetrosal approach (ATPA) is applied to petroclival and brainstem lesions. Although neurosurgeons need to minimize the risk of neurologic complications, brain retraction is necessary for procedures of ATPA. Bridging veins (BVs) limit mobility of the temporal lobe. In the present study, BVs around the petrous bone were analyzed, focusing on the dural entrance and termination points. ⋯ TBVs entering the T-S junction or SPS with short subdural segment may limit the mobility of the temporal lobe. Changes in vascular diameter, shape, and course were detected by computed tomography venography, which was helpful to detect the subdural-meningeal transition.