World Neurosurg
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Observational Study
Cerebellopontine Angle Tumors Are Associated with a Greater Incidence of Unruptured Intracranial Aneurysms.
We tested the hypothesis that cerebellopontine angle (CPA) tumors are associated with a greater incidence of unruptured intracranial aneurysms (IAs). ⋯ These data support the hypothesis that CPA tumors are associated with a greater incidence of unruptured IAs, especially in female patients. Cerebral arteriosclerosis contributed to elevated risk of IA in patients with CPA tumors.
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Indocyanine green (ICG) videoangiography can assess cerebral blood flow, but results are primarily qualitative. FLOW 800 software measures fluorescence dynamics and creates a semiquantitative color delay map for assessment of relative sequence of blood flow within the vasculature. ⋯ ICG videoangiography with FLOW 800 analysis can provide semiquantitative and relative flow magnitude data that are efficient and noninvasive. This process helps identify early arterialized veins and their flow status during AVM and dAVF surgery and can confirm adequate relative flow within branching vessels during aneurysm surgery when clip-induced stenosis is suspected.
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This study aimed to analyze radiologic and clinical results with a minimum 5 years follow-up (FUP) of lateral lumbar total disc replacement for the treatment of symptomatic lumbar degenerative disc disease. ⋯ This study presents mid-term to long-term results of extreme lateral total disc replacement artificial disc for the treatment of lumbar degenerative disease, with fast mobilization, sustained pain relief, and improved physical function. Despite the low rate of ALDis, some discs evolved to ankyloses and others were retrieved. Lumbar artificial disc replacement by the lateral approach seems to be a safe and effective treatment.
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Acoustic neuromas (ANs) are benign intracranial tumors that arise from myelin-forming Schwann cells surrounding the vestibular branch of the vestibulocochlear nerve (cranial nerve VIII). Treatment options for AN include observation, radiosurgery, and microsurgical resection. Gamma Knife radiosurgery (GKRS) for AN has well-documented short-term safety and efficacy for carefully selected patients. Recent innovations in GKRS technology may improve long-term outcomes. The aim of this study was to report long-term tumor control and complication rates after GKRS for sporadic AN. ⋯ Patients undergoing GKRS for sporadic ANs had high rates of tumor control over a median follow-up time of >5 years. Improvements in radiosurgery treatment planning were seen in the most recent cohort of patients. GKRS is a safe and effective modality for treating sporadic ANs in selected patients.
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It is unknown whether spinal instrumentation is required to prevent deformity after partial vertebrectomy in the treatment of primary bronchogenic carcinomas invading the spine (PBCIS). In this study, we focus on the postoperative spine deformity in patients who underwent operation for partial vertebrectomies without instrumentation during en bloc PBCIS resection. Our objective was to determine whether deformity depends on the type of vertebral resection and if any vertebral resection threshold can be observed to justify additional spinal instrumentation. ⋯ There are no validated criteria to justify a systematic spinal instrumentation when performing a partial vertebrectomy during en bloc resection of PBCIS. Performed alone without spine instrumentation, both type A and type B resections on less than 3 resected vertebrae were not subject to sagittal and coronal deformity even after a long follow-up, emphasizing that a systematic stabilization is not needed in this low-risk group. These results could help to reduce the perioperative morbidity of these procedures that are usually long and complex.