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Peritumoral brain edema and cortical damage by meningioma
1Department of Neurosurgery, Tokyo Women's Medical College Dai-ni Hospital, Japan.
Abstract:
Forty supratentorial meningiomas were analyzed to identify factors causing peritumoral brain edema. Parasagittal, sphenoid ridge, and olfactory groove meningiomas induced edema more frequently than those in other locations. Meningothelial meningiomas were more invasive than other types and were associated with more peritumoral edema. Brain edema correlated significantly with tumor size and histological evidence of leptomeningeal and cortical damage from the tumor. Larger tumors destroy the leptomeninges and cerebral cortex, allowing direct transmission of edema fluid into the white matter, resulting in vasogenic edema.
Insights
Brain edema in supratentorial meningiomas is linked to tumor location, type, and size. Meningothelial tumors and those damaging the brain surface frequently cause peritumoral edema due to direct fluid transmission.
Area of Science:
- Neurosurgery
- Neuropathology
- Oncology
Background:
- Peritumoral brain edema is a common complication of supratentorial meningiomas.
- Understanding the factors contributing to edema is crucial for patient management and surgical planning.
Purpose of the Study:
- To identify specific factors associated with the development of peritumoral brain edema in supratentorial meningiomas.
Main Methods:
- Retrospective analysis of 40 supratentorial meningiomas.
- Correlation of tumor location, histological type, tumor size, and leptomeningeal/cortical damage with the presence and severity of peritumoral edema.
Main Results:
- Parasagittal, sphenoid ridge, and olfactory groove meningiomas were more frequently associated with edema.
- Meningothelial meningiomas showed higher invasiveness and greater edema.
- Edema significantly correlated with tumor size and histological evidence of leptomeningeal and cortical damage.
Conclusions:
- Tumor location, histological subtype (meningothelial), size, and extent of cortical/leptomeningeal invasion are key determinants of peritumoral edema.
- Large tumors can breach the leptomeninges and cortex, facilitating direct edema fluid transmission into the white matter, causing vasogenic edema.