Atypical Rapidly Enlarging Orbital Schwannoma

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Abstract

Orbital schwannomas are typically slow-growing benign tumors that can cause gradual loss of vision, proptosis, and limitation of ocular motility. The authors present an atypical case of a rapidly growing orbital apex schwannoma in a patient with preexisting vision loss secondary to presumed sarcoidal optic neuritis. Contrary to the slowly progressive nature of a typical orbital schwannoma, the lesion was observed to enlarge from radiologically undiscernible to 3.5 cm over 4 years.

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