World Neurosurg
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Case Reports
A rare case of schwannoma arising from dura mater of the petrosal surface in the posterior cranial fossa.
An intracranial schwannoma originating in the dura mater is extremely rare. Herein, we report a case of schwannoma arising from the dura mater of the petrosal surface in the posterior cranial fossa. ⋯ The operative and postoperative findings suggested that the schwannoma originated in the meningeal branch of the lower cranial nerves or upper cervical nerves in the dura mater of the petrosal surface in the posterior cranial fossa.
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Vertebral angioma is a tumor defined as an abnormality of vascular tissue development. It usually has an asymptomatic behavior, being present in 10%-12% of autopsies and imaging studies. ⋯ Even in the case of a complication to occur, we should always consider a minimally invasive solution to solve the problem because patients undergoing these procedures correspond to elderly patients with poor medical conditions or comorbidities.
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To study the surgical anatomy of the labyrinthine artery (LA) and the subarcuate artery (SA), their anatomic relationships, and clinical implications, as injury of the LA can result in hearing loss. ⋯ Knowledge of the different trajectory and anatomic relationship of the LA and the SA with the vestibulocochlear nerve is of paramount importance to differentiate them during surgery. The LA is usually inferomedial to the vestibulocochlear nerve at its distal and proximal aspects, whereas the SA usually originates lateral and ends superolateral to the nerve.
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Acute bilateral internal carotid artery (ICA) occlusion has rarely been reported to exhibit an improvement in prognosis. Herein, we report a case of acute bilateral ICA occlusion presenting with bilateral symmetric cortical and basal-ganglia infarctions that exhibited dramatic improvement after a mechanical thrombectomy. ⋯ Bilateral ICA occlusion should be considered if a patient presents with a coma, quadriplegia, and symmetric cortical infarctions. In such a case, a bilateral mechanical thrombectomy may represent a potential treatment for improving the prognosis of the affected patient.
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The effect of expandable versus static cage type on radiographic outcomes in transforaminal lumbar interbody fusion (TLIF) has not been well studied in the literature. We studied the effect of 3 cage types on change in foraminal height (FH), disk height (DH), subsidence, and segmental lordosis (SL). ⋯ The average increase in the foraminal height in TLIF is small (0.7 mm) and is not different between the cage types; therefore, direct decompression is crucially important in this procedure. Although TLIF is often considered to be a kyphotic procedure, an expandable cage demonstrated superiority in terms of segmental lordosis improvement.