Multiple cauda equina schwannomas in neurofibromatosis type 2

Discussion:

The patient, who has an established diagnosis of NF2, went on to have surgery for the largest L4 level lesion. 

Histology

MICROSCOPIC DESCRIPTION: Paraffin sections show fragments of a moderately hypercellular neurilemmoma (Schwannoma). This is composed of predominantly of Antoni A type tissue in which there are occasional poorly formed Verocay bodies. Tumor cells show mild nuclear pleomorphism. No mitotic figures, densely hypercellular areas or areas of necrosis are identified.

FINAL DIAGNOSIS: Spinal schwannoma

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