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Pre- and postoperative changes in brain tissue surrounding a meningioma
S Trittmacher1, H Traupe, A Schmid
1Department of Radiology, Klinikum Steglitz, Berlin, Germany.
Neurosurgery
|May 1, 1988
Summary
Two mechanisms cause hypodense areas around intracranial meningiomas: persistent pressure-induced atrophy and cerebral edema. Malignant meningiomas correlate with wider hypodensity spread.
Area of Science:
- Neurosurgery
- Neuroradiology
- Pathology
Background:
- Intracranial meningiomas can present with surrounding hypodense areas on imaging.
- The exact pathological mechanisms behind these hypodensities are not fully understood.
Purpose of the Study:
- To investigate the pathological mechanisms contributing to hypodense areas adjacent to intracranial meningiomas.
- To explore the relationship between tumor characteristics and the extent of hypodensity.
Main Methods:
- Retrospective analysis of 33 patients with intracranial meningioma.
- Review of imaging findings to assess hypodense areas.
- Correlation of hypodensity extent with tumor factors.
Main Results:
- Identified two primary mechanisms: persistent pressure-induced atrophy and cerebral edema.
- Hypodense area extent was not significantly correlated with tumor location or size.
- A correlation was observed between meningiomas with malignant potential and hemispheric spread of hypodensity.
Conclusions:
- Pressure-induced atrophy and cerebral edema are key factors in peritumoral hypodensity.
- Malignancy in meningiomas may be associated with more extensive surrounding hypodensity.
- Further research is needed to elucidate the causes of cerebral edema in these cases.