TY - JOUR AU - Ko, Chun-yu AU - Tse, Raymond KK AU - Ng, Chi-shing PY - 1997/12/01 Y2 - 2024/03/29 TI - Orbital schwannoma: report of a case and review of the literature JF - Hong Kong Journal of Ophthalmology JA - Hong Kong J Ophthalmol VL - 1 IS - 3 SE - Original Articles DO - UR - https://hkjo.hk/index.php/hkjo/article/view/190 SP - 120-124 AB - <p>Orbital schwannoma is a rare orbital tumor comprising only about 1 % of all orbital tumors. A 64-year-old Chinese male presented to our clinic with a 1-month history of unilateral proptosis, seeing double, and progressive painless visual loss. The proptosis was axial in nature, and an intraconal mass was revealed by an<br />orbital computed tomographic scan. The mass was excised en bloc through a lateral orbitotomy approach. A histopathologic examination showed a well-encapsulated tumor composed of spindle cells arranged in both Antoni A and B patterns, which was compatible with the diagnosis of schwannoma. The differential diagnoses of intraconal orbital mass and the radiological and pathological findings of the lesion are described and discussed. A literature review of 60 published cases of orbital schwannoma is also presented.</p> ER -