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Hybrid Schwannoma-Perineurioma of the Orbit
Benjamin Zhou1, Tatyana Milman2, Fausto J Rodriguez3
1Institute of Ophthalmology and Visual Science, Rutgers New Jersey Medical School, Newark, New Jersey, U.S.A.
Abstract:
A 52-year-old woman presented with a 6-month history of progressive right proptosis associated with intermittent right retrobulbar and facial pain. MRI revealed a heterogeneously enhancing, well-circumscribed, ovoid, soft tissue mass in the intraconal space near the right orbital apex displacing the optic nerve medially. Excisional biopsy established the diagnosis of a schwannoma-perineurioma hybrid peripheral nerve sheath tumor (HPNST). This case represents only the second reported occurrence, to our knowledge, of an orbital schwannoma-perineurioma HPNST.
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