World Neurosurg
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Moyamoya disease (MMD) is a cerebrovascular disorder, currently defined as progressive stenosis of intracranial internal carotid artery and its main branches with secondary formation of netlike vessels. Its precise formation mechanism, however, is unknown. We propose that MMD is caused by abnormal embryonic development of the cerebral arteries and also propose a mechanism for MMD formation. ⋯ MMD is more likely to be caused by abnormalities of cerebral artery development, which mainly occur in the embryonic period or postnatally. The abnormality developing processes include sprouting angiogenesis, vessel fusion, and pruning, which primarily affect cranial ramus of primitive internal carotid artery, may occasionally affect the caudal ramus of the primitive internal carotid artery, and rarely affect the vertebrobasilar artery system. So-called moyamoya vessels comprise unfused primitive small vessels; to compensate, enlarged AChoAs remain undegenerated but are not dilated.
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We evaluated the factors influencing overall survival (OS) and event-free survival (EFS) in children with atypical teratoid/rhabdoid tumors (ATRTs). ⋯ Achieving gross total resection should be the aim of surgery, depending on the tumor location, and these children should undergo upfront adjuvant treatment.
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To investigate potential risk factors for cerebral hyperperfusion syndrome (CHS) after surgery in patients with moyamoya disease (MMD) using phase-contrast magnetic resonance imaging (MRI). ⋯ Patients with MMD and ischemic onset symptoms are more likely to develop CHS after surgery. Preoperative phase-contrast MRI analysis may be helpful to predict CHS in patients with MMD after surgery.
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Histologic types and grades are critical in the diagnosis and treatment of spinal tumors. Intraoperative frozen section is a fast and easy method in confirming pathologic diagnosis during the operation. This study was undertaken to reveal the accuracy of intraoperative frozen section biopsy in order to make proper treatment plans. ⋯ Pathologic findings from frozen biopsy for spinal cord tumors could not be corresponded to final diagnosis, especially when the results of frozen biopsy were ependymoma or astrocytoma. Therefore careful decision making for treatment plans is required.
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Since the debut of Facebook in 2004, social media (SoMe) has garnered increased popularity and usage worldwide. Given its appeal and visibility, many industries have used SoMe to promote products for professional purposes. Specialized sites have subsequently been created to connect users in similar disciplines. Although SoMe sites have amassed over 1-billion followers, SoMe usage in the neurosurgical community has not yet been well described. ⋯ As SoMe becomes increasingly popular and its use expands, the majority of neurosurgeon respondents are also using SoMe for professional purposes. Although lack of time, lack of perceived value, and privacy concerns were hindrances to usage, other factors like age do not seem to correlate with SoMe adoption for professional aims.