Journal of neurosurgery
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Journal of neurosurgery · Feb 2024
Morphologic differences between ruptured and unruptured choroidal anastomosis in adult moyamoya disease: a high-resolution vessel wall imaging study.
Choroidal anastomosis (ChA) has been implicated as the main indicator of an increased hemorrhagic risk in adult moyamoya disease. In this retrospective study, the authors aimed to identify the potential risk factors that can influence the rupture of ChA. ⋯ A larger LA (> 1.285 mm2) of the ChA and the angiographic presence of ChA alone are independent risk factors for a ruptured ChA. Revascularization surgery for the prevention of future hemorrhage may be indicated for hemispheres with a high-risk unruptured ChA. These characteristics may help to determine treatment strategies for patients with an unruptured ChA.
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Journal of neurosurgery · Feb 2024
Safety and efficacy of the endoscopic transsphenoidal transclival approach performed using direct cortical stimulation for pontine cavernous malformations.
Surgical treatment of brainstem cavernous malformations (CMs) is challenging. Surgery using the endoscopic transsphenoidal transclival approach (eTSTCA) is reported as a useful alternative for ventral brainstem CMs. However, CMs located in the ventral midline of the brainstem are rare, and only a small number of case reports on these CMs treated with the eTSTCA exist. The efficacy and safety of the eTSTCA have not yet been fully examined. ⋯ MR-diffusion tensor imaging and direct brainstem cortical stimulation were useful to ascertain the proximity of the CST to the CM. The endoscope provides a clear view even underwater, and it was safe and effective to observe the entire CM cavity and confirm complete hemostasis without additional retraction of the brainstem parenchyma, including the CST. The eTSTCA provides a direct access point to the lesion and may be a safer alternative treatment for patients whose CST deviates laterally or posteriorly to the CM.
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Journal of neurosurgery · Feb 2024
A novel classification and management scheme for craniocervical junction disorders with ventral neural element compression.
Craniocervical junction (CCJ) pathologies with ventral neural element compression are poorly understood, and appropriate management requires accurate understanding, description, and a more uniform nomenclature. The aim of this study was to evaluate patients to identify anatomical clusters and better classify CCJ disorders with ventral compression and guide treatment. ⋯ In classifying, one cluster caused decreased posterior fossa volume due to an anatomical triad of retroflexed dens, platybasia, and CM. The second cluster caused pannus formation due to degenerative hypertrophy. For both, endonasal decompression with posterior fixation was ideal. The third group contained C1 anterolisthesis characterized by a steep C1-2 facet angle causing reducible BI. Posterior reduction/fixation is the first-line treatment when anatomically feasible or endonasal decompression with in situ posterior fixation when anatomical constraints exist.
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Journal of neurosurgery · Feb 2024
Bilateral brain microstructural alterations in patients with left-sided classic trigeminal neuralgia: a diffusion kurtosis imaging study.
White matter microstructural abnormalities in patients with classic trigeminal neuralgia (TN) have been observed. However, the impact of classic TN in both hemispheres, the difference and extent of alterations in bilateral hemispheres, and the relationship between the impaired area and pain conduction are not fully understood. The purpose of this study was to investigate brain microstructural alterations and compare the bilateral hemispheres in patients with unilateral classic TN, as well as to explore their clinical implications. ⋯ The authors concluded that unilateral TN could have asymmetrical microstructural alterations in bilateral hemispheres, which might be due to the compromised fiber tract integrity and abnormal neurons and synapses. The thalamus could be an important relay station in the pain conduction and modulation pathway and could have microstructural abnormalities in both the left and right sides. DKI could provide important information on the CNS pathophysiology of TN and assist in prognostic evaluation.
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Journal of neurosurgery · Feb 2024
Neurosurgery resident education in Ethiopia: a cross-sectional study, history, and future educational opportunities.
An adequate healthcare workforce characterizes high-quality health systems. Sustainable domestic neurosurgery training is critical to developing a local neurosurgical workforce in low- and middle-income countries (LMICs). This study evaluated how neurosurgical training is delivered in Ethiopia, provides a historical narrative of neurosurgery training in the nation, and proposes future educational opportunities. ⋯ The history of Ethiopian neurosurgery training exemplifies how global neurosurgery efforts focused on capacity building can rapidly expand the local neurosurgical workforces of LMICs. Opportunities for neurosurgical education require initiatives promoting a subspecialized, diverse workforce that attains both the clinical and academic proficiency necessary for advancing neurosurgical care locally and globally.