Chordoid meningioma

Case contributed by Mahomed A. Osman
Diagnosis almost certain

Patient Data

Gender: Female

There is a large, well circumscribed extra-axial parafalcine mass with a lobulated margin on the right, with associated mass effect and midline shift to the left. 

The mass is hypointense on T1, hyperintense on T2 and has homogenous enhancement on T1 C+ weighted imaging. The mass has a broad falcine base and appears to arise from the falx cerebri. The majority of the mass demonstrates pronounced facilitated diffusion, with even the most restricted area showing ADC values still higher than adjacent brain. 

The findings suggest meningioma.

Case Discussion

The tumor was resected and histopathological findings were found to be consistent with chordoid meningioma.

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