PMC8571252_01
Pre-operative imaging. (a) sagittal MRI contrast-enhancing intradural extramedullary lesion at T4 with severe compression of the spinal cord, (b) sagittal CT demonstrates hyperdense signal within the tumor suggesting calcifications.
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F1
The CT scan confirmed the lesion was hyperdense, consisting of intratumoral ossification [Figure 1]. The predominant differential diagnoses included ossified meningioma versus schwannoma.
Hematoxylin and eosin (x20) images demonstrate (a) meningothelial cells with swirls, (b) numerous psammoma bodies, (c and d) ossifications.
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F2
As the tumor showed little mitotic activity, and there were no areas of hypercellularity, the final diagnosis was for a WHO grade I (benign) meningioma [Figure 2].