World Neurosurg
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Endovascular Treatment of Middle Cerebral Artery Dissecting Aneurysms: A 7-Year Single-Center Study.
To evaluate safety and efficacy of endovascular treatment of middle cerebral artery dissecting aneurysms (MCADAs). ⋯ Our data suggest that endovascular treatment of MCADAs appears to be safe and effective. The choice of treatment method needs to be individualized. Larger studies are required to evaluate these promising results.
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Case Reports
Dural-Based Cavernous Malformation at the Cerebral Convexity: Report of Two Pediatric Patients.
Intracranial cavernous malformations (CMs) are usually located at the cerebral parenchyma; dural-based CMs outside the middle fossa are rarely reported. To our knowledge, dural-based CMs located at the cerebral convexity are even rarer in that only 2 pediatric cases have ever been reported. In this report, we present 2 extremely rare cases of dural-based CMs at the cerebral convexity in pediatric patients. The clinical course, radiologic and pathologic features, treatment, and follow-up are described. ⋯ The clinical manifestations and radiologic characteristics of dural-based CMs are nonspecific. Unlike that of their cerebral parenchymal counterparts, the radiologic appearance of dural-based CMs is confusing and misleading. Surgical resection is the primary treatment selection for dural-based CMs. In cases with no close relationship to dural sinuses, complete surgical resection with minimal blood loss and few neurologic deficits could be easily achieved.
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The massa intermedia (MI) or interthalamic adhesion is an inconsistent band spanning between bilateral medial thalami that is absent in up to 20%-30% of individuals. Little is known of its significance, especially in regard to functional pathways. Probabilistic diffusion tensor imaging (DTI) has recently been used to seed the lateral habenula and define its afferent white matter pathway, the stria medullaris thalami (SM). We sought to determine whether the MI serves as a conduit for crossing of limbic fibers such as the SM. ⋯ Probabilistic DTI provides evidence of SM fibers within the MI. Given its anatomic location as a bridging pathway between thalami, further studies are necessary to assess its role within the limbic functional network.
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Case Reports
Malignant Peripheral Nerve Sheath Tumor of the Trigeminal Nerve Involving the Middle and Posterior Cranial Fossa.
Although benign trigeminal schwannomas are uncommon, malignant peripheral nerve sheath tumors (MPNSTs) of the trigeminal nerve are extraordinarily rare. ⋯ MPNSTs of the trigeminal nerve are exceedingly rare. This study described the 21st case of MPNSTs of the trigeminal nerve. MPNSTs of the trigeminal nerve showed similar radiologic characteristics to benign trigeminal schwannomas, and accurate diagnosis depended on pathologic and immunochemical examinations. Gross total resection followed by radiotherapy is the usual treatment.
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A possible risk factor for premature facet joint degeneration or adjacent segment degeneration after surgical treatment of spine fractures is facet joint violation (FV) during insertion of pedicle screws. The aim of this study was to determine risk factors for FV in the thoracic and lumbar spine after minimally invasive screw insertion or open instrumentation (OI). ⋯ FV is a common complication after thoracic and lumbar spine surgery. Although both, the SL instrumentation and a minimally invasive procedure increases its occurrence, the patient characteristics do not affect the rate of FV.