Abstract
Background: Intraocular schwannoma is a rare intraocular tumor, which is often misdiagnosed. We aimed to analyze the demographics and clinical characteristics of patients with intraocular schwannoma.Methods: Retrospective case series were collected from May 2005 to July 2021 in Beijing Tongren Hospital. Then a literature review was also performed.Results: A total of 28 patients were diagnosed with intraocular schwannoma histopathologically. The median age (range) of the included patients was 39 (12-64) years old, among whom half subjects were female. The most common symptom was visual loss (75.0%), followed by visual field loss (10.7%). Intraocular schwannoma presented as nonpigmented mass, which occurred mainly in ciliary body (42.9%), followed by choroid (32.1%) and ciliochoroid (25.0%).16 patients (57.1%) were clinically misdiagnosed as uveal melanoma. Tumor excision was performed for all patients and increased light transmission was detected in half cases. In the consecutive follow-up (median: 6.0 years, range: 0.5-16.0 years), no recurrence or metastasis case was detected.Conclusions: Intraocular schwannoma is a rare benign intraocular tumor. It usually presents as nonpigmented mass, which is easily misdiagnosed as nonpigmented uveal melanoma.
Role of interferon-γ and cytotoxic T lymphocytes in intraocular tumor rejection
