期刊
BRAIN AND SPINE
卷 3, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.bas.2023.101740
关键词
Meningioma; Intraoperative sampling; CNS invasion; Brain invasion; Survey; EANS
This study examined the sampling methods and diagnostic value of invasive growth of meningiomas in neurosurgical departments, and found significant variations in sampling methods among departments. A structured sampling method is needed to optimize the diagnosis of invasive growth of meningiomas.
Introduction:and Research Question: Invasive growth of meningiomas into CNS tissue is rare but of prognostic significance. While it has entered the WHO classification as a stand-alone criterion for atypia, its true prognostic impact remains controversial. Retrospective analyses, on which the current evidence is based, show conflicting results. Discordant findings might be explained by different intraoperative sampling methodologies. Material and methods:To assess the applied sampling methods in the light of the novel prognostic impact of CNS invasion, an anonymous survey was designed and distributed via the EANS website and newsletter. The survey was open from June 5th until July 15th, 2022. Results:After exclusion of 13 incomplete responses, 142 (91.6%) datasets were used for statistical analysis. Only 47.2% of participants' institutions utilize a standardized sampling method, and 54.9% pursue a complete sampling of the area of contact between the meningioma surface and CNS tissue. Most respondents (77.5%) did not change their sampling practice after introduction of the new grading criteria to the WHO classification of 2016. Intraoperative suspicion of CNS invasion changes the sampling for half of the participants (49.3%). Additional sampling of suspicious areas of interest is reported in 53.5%. Dural attachment and adjacent bone are more readily sampled separately if tumor invasion is suspected (72.5% and 74.6%, respectively), compared to me-ningioma tissue with signs of CNS invasion (59.9%). Discussion and conclusions: Intraoperative sampling methods during meningioma resection vary among neuro-surgical departments. There is need for a structured sampling to optimize the diagnostic yield of CNS invasion.
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