World Neurosurg
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Technical surgery-related issues for large ossified/calcified meningioma that encased one or both vertebral arteries located anterior to brainstem in the region of foramen magnum are discussed. Relatively long-term outcome of successful surgery is reported. ⋯ Successful resection of "ossified" meningioma is associated with satisfactory long-term clinical outcome.
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We present a case of symptomatic heterotopic bone formation following revision of posterolateral lumbar fusion/instrumentation and "off-label" use of recombinant human bone morphogenetic protein-2, treated successfully with the use of a minimally invasive tubular approach.
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Two degrees of posterior cranial fossa (PCF) maldevelopment can be hypothesized in children with myelomeningocele (MMC). This paper investigates the PCF deformation by quantitative magnetic resonance imaging analysis in MMC subjects with and without Chiari 2 malformation (CM2). ⋯ PCF hypoplasia has to be considered a dynamic maldevelopment process in the 2 cohorts rather than 2 separated entities. The level of MMC is the main but not the unique cause influencing the severity of PCF maldevelopment.
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The brain is one of the common metastatic sites of lung adenocarcinoma, and the prognosis associated with brain metastasis is not good. We performed a large data analyses to determine the prognostic factors of lung adenocarcinoma with brain metastases (LABM) and to develop a nomogram to predict its prognosis. ⋯ The nomogram is expected to be a precise and personalized tool for predicting the prognosis of patients with LABM. This nomogram will help clinicians develop more rational and effective treatment strategies.
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The ventral elevation (VE) of the psoas from the vertebral column as seen on axial magnetic resonance imaging has been suggested as a preclusion of a safe working zone for lateral lumbar interbody fusion (LLIF) at L4-5. However, no quantitative study has been conducted to verify this. ⋯ LLIF is feasible in patients with ventrally elevated psoas, and the choice of cages does not appear to be influenced by the location of the psoas. Relying on the rising psoas sign on magnetic resonance imaging as a case selection criterion may unjustly exclude patients from LLIF.