Neurosurgery
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The use of deep brain stimulation (DBS) to treat a variety of disorders has expanded and will result in an increasingly larger number of patients and implanted electrodes. Hardware failure can result from malfunction, lead migration, fracture, and infection. Scalp erosion with exposure of underlying hardware can lead to potential infectious complications and is, in itself, a strong indication for explantation of the neurostimulation system. The patient's relief of symptoms after DBS will be limited by hardware-related complications and thus, strategies to revise scalp overlying hardware are important in the widespread application of DBS. ⋯ Stimulation of various deep brain targets helps patients with a wide range of diseases. In the future, with continued refinement, hardware complications can be minimized. Until then, novel approaches need to be developed to save DBS systems and provide symptomatic relief to patients.
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Case Reports
Combined endoscope-assisted transclival clipping and endovascular stenting of a basilar trunk aneurysm: case report.
We describe a patient with a mid-basilar aneurysm treated with combined endoscope-assisted transsphenoidal clipping and endovascular stenting. ⋯ Watertight dural closure was possible due to the use of a low-profile aneurysm clip that did not protrude through the dural defect, as well as self-tying sutures.
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Clinical Trial
Percutaneous computed tomography-guided radiofrequency ablation of upper spinal cord pain pathways for cancer-related pain.
The author presents data to support the continued need for ablative procedures, particularly cordotomy, in the management of cancer-related pain. ⋯ Computed tomography-guided ablation of the upper cervical spinal cord is a safe and effective procedure to treat cancer pain involving the body or face. There remains a need for ablative procedures, in particular cordotomy, in the management of cancer-related pain.
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To study the influence of the anatomy of neurovascular compression (NVC) on pain outcome in patients with classic trigeminal neuralgia treated by radiosurgery. ⋯ The visualization of NVC, nerve atrophy, and nerve dislocation on magnetic resonance imaging scans was not associated with pain outcome. A large vessel compressing the nerve and deforming the brainstem and proximal NVC were associated with a lesser pain control.
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The response to shunt surgery for idiopathic normal-pressure hydrocephalus (INPH) is variable because INPH is difficult to distinguish from other conditions causing the same symptoms. To date, no clinical picture or diagnostic test can distinguish INPH or predict response to cerebrospinal fluid (CSF) shunt surgery. We reviewed our 10-year experience with INPH to characterize long-term outcome and to identify independent predictors of outcome after shunt surgery. ⋯ INPH can be diagnosed accurately with CSF pressure monitoring and CSF drainage via a spinal catheter. CSF shunting is safe and effective for INPH with a long-term shunt response rate of 75%. Independent predictors of improvement are the presence of gait impairment as the dominant symptom and shorter duration of symptoms.