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Predictive factors for high-grade transformation in benign meningiomas
- Source :
- Clinical neurology and neurosurgery. 195
- Publication Year :
- 2020
-
Abstract
- Objective Although they are generally slow-growing benign tumors, meningiomas may recur after surgery with transformation into atypical meningiomas. The purpose of this study was to investigate the radiological and histopathological factors that predict the risk of tumor progression from a benign to an atypical meningioma. Patients and Methods All patients treated for recurrent meningiomas in whom the tumor showed histopathologically confirmed high-grade transformation (HGT) from a benign to an atypical meningioma between 2001 and 2017 were included. To evaluate the predictors of transformation, patient medical records documenting the diagnosis of a benign meningioma at the first surgery prior to second surgery with HGT were reviewed. Each patient was matched with four age- and sex-matched controls who were treated for a benign meningioma. The control group comprised all patients without any recurrence for at least 60 months. Results Fourteen patients with benign meningioma underwent HGT and were included. The median time interval of transformation was 63 months (range, 19–132 months). Multivariate analysis indicated that an increased mitotic index (odds ratio [OR], 10.409; 95 % confidence interval [CI], 1.297–83.549; P = 0.027) was a significant predictor of transformation. Prominent peritumoral edema (OR, 33.822; 95 % CI, 0.935–223.688; P = 0.054) did not reach the statistical significance. Conclusion An increased mitotic index may be used as the predictor for HGT of benign meningiomas. Although these tumors with a high risk for transformation do not meet the diagnostic criteria for atypical meningiomas, they may require more attentive observation and management than other benign meningiomas.
- Subjects :
- Adult
Male
medicine.medical_specialty
Multivariate analysis
Mitotic index
Meningioma
03 medical and health sciences
0302 clinical medicine
Risk Factors
Statistical significance
otorhinolaryngologic diseases
medicine
Meningeal Neoplasms
Mitotic Index
Humans
neoplasms
Aged
Retrospective Studies
business.industry
General Medicine
Odds ratio
Middle Aged
medicine.disease
Confidence interval
nervous system diseases
Cell Transformation, Neoplastic
Tumor progression
030220 oncology & carcinogenesis
Benign Meningioma
Surgery
Female
Neurology (clinical)
Radiology
Neoplasm Recurrence, Local
business
030217 neurology & neurosurgery
Subjects
Details
- ISSN :
- 18726968
- Volume :
- 195
- Database :
- OpenAIRE
- Journal :
- Clinical neurology and neurosurgery
- Accession number :
- edsair.doi.dedup.....4518f115f0ce4c491a2c90832a9be4ac