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Case contributed by Frank Gaillard
Diagnosis certain



Patient Data

Age: 60 years

Interhemispheric mass inferiorly displacing and flattening the corpus callosum and entrapping the right lateral ventricle trigone and temporal horn has imaging morphology most consistent with a meningioma arising from the free edge of the falx.

Case Discussion

The patient went on to have a resection.


MICROSCOPIC DESCRIPTION: Paraffin sections show fragments of a moderately hypercellular meningioma. This has a mixed syncytial and fibroblastic architecture. Scattered calcified psammoma bodies are also noted. Tumor cells have uniform nuclear features. No mitotic figures or areas of necrosis are identified and there is no evidence of brain invasion.

FINAL DIAGNOSIS: Meningioma (WHO Grade I).

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