Definition
Birdshot retinochoroidopathy (BSRC) is a rare distinct intraocular inflammatory condition. It is characterized by the presence of multiple cream-colored round or oval choroidal lesions in the post-equatorial region, mainly the peripapillary area at the level of the outer retina/choroid. The lesions appear in a pattern resembling the scatter of birdshot pellets from a shotgun (Nussenblatt et al. 1982; Priem et al. 1988).
Pathogenesis
BSRC is considered a T-cell-mediated disease. Findings of higher than normal levels of IL-17 in the serum and aqueous humor of affected patients suggest that the Th17 subset is involved in the pathogenesis of BSRC (Miossec et al. 2009; Brezin et al. 2011). About 95 % of patients with BSRC are positive for HLA A-29 – the highest class 1 haplotype association of any disease – but its pathogenic role remains unclear. Molecular mimicry triggered by antecedent infection is a popular hypothesis.
Epidemiology...
References
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Kramer, M. (2015). Birdshot Retinochoroidopathy (Vitiliginous Chorioretinitis). In: Schmidt-Erfurth, U., Kohnen, T. (eds) Encyclopedia of Ophthalmology. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-35951-4_1086-1
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DOI: https://doi.org/10.1007/978-3-642-35951-4_1086-1
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