World Neurosurg
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Meta Analysis
The risk factors for high-grade meningioma in brain and spine: A systematic review and meta-analysis.
Histologic grade has important implications for the management in meningioma. It is important to understand the risk of high-grade meningioma (grades II and III). In this article, we systematically reviewed the histologic grade of meningioma depending on the location and sex and its relationship with recurrence. ⋯ This meta-analysis found that intracranial, nonskull base, and male sex are risk factors for high-grade meningioma, and high-grade meningioma had a much higher recurrence rate as compared with grade I meningioma.
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Anatomic knowledge and insight depend on the cumulative contributions of anatomists over time, and eponyms pay homage to some of these individuals. ⋯ Eponyms remind us of an artery's importance and can improve our clinical acumen or technique. They have become an integral part of our day-to-day vocabulary, often without our historical knowledge of these anatomists. This report reviews these histories and the anatomy to deepen our appreciation of arterial eponyms in vascular neurosurgery.
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Multicenter Study
Histopathological correlation (WHO Classification) of meningiomas and their anatomical localization. Multicenter epidemiological study in Mexico.
To determine the epidemiology of the localization and histological type of meningiomas in the Mexican population and the distribution of the different histological patterns and their relationship to tumor localization and patient demographics. ⋯ There was a correlation between the histology of the 15 histopathological varieties of meningiomas and the predilection site of appearance as well as certain demographic aspects, such as sex. This study lays the foundation for future studies in Mexico on the differentiation and typing of meningiomas regardless of the histological grade to which they belong, as the exact behavior of these tumors, including grade I tumors, remains unknown to date.
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Pediatric pleomorphic xanthoastrocytoma (PXA) is a rare brain tumor. To date, there are few studies dedicated to this kind of pediatric tumor. The aim of this study was to investigate the clinicopathologic characteristics of pediatric PXA. ⋯ Cystic components and peritumoral edema could be seen in most pediatric PXAs, and calcification was also not uncommon. The size of the tumor was correlated with the tumor site and radiologic subtype. Maximal safe resection of pediatric PXA is recommended and was shown to be beneficial for seizure control and survival.
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Meta Analysis
Plurihormonal Pit-1 Positive Pituitary Adenomas: a systematic review and single center series.
The 2017 World Health Organization classification of pituitary adenomas identified the plurihormonal PIT-1-positive (PP1) adenoma as a distinct subtype. The reported data suggest that PP1 adenomas encompass the former class of silent subtype 3 (SS3) adenomas and might have an aggressive phenotype. In the present study, we summarized the current clinical data on PP1 and SS3 adenomas and compared the reported data with the data from a single institutional cohort. ⋯ The findings from the present large, single-center study comparing PP1 and non-PP1 adenomas do not suggest that PP1 tumors are more aggressive. Further work is warranted to identify the pathologic subtypes of pituitary adenomas that are consistently more clinically aggressive.