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Σάββατο 28 Ιανουαρίου 2017

Characterization of isolated retinal vasculitis. Analysis of a cohort from a single center and literature review

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Publication date: Available online 27 January 2017
Source:Autoimmunity Reviews
Author(s): Laura Pelegrín, José Hernández-Rodríguez, Gerard Espinosa, Víctor Llorenç, Maite Sainz-de-la-Maza, José R. Fontenla, José A. Martínez, Maria C. Cid, Alfredo Adán
IntroductionIsolated retinal vasculitis (IRV) is an inflammatory condition of unknown etiology confined to the retinal vessels. In contrast to secondary retinal vasculitis (RV), IRV has not been well characterized.ObjectiveTo describe and characterize isolated forms of RV.MethodsWe performed a retrospective review (2006–2016) of IRV patients from a multidisciplinary Uveitis Unit. RV diagnosis was based on funduscopic and fluorescein angiography findings. To distinguish between secondary RV and IRV, evaluations included clinical assessment, laboratory inflammatory, autoimmune and microbiological markers and chest radiography. Ophthalmological features at disease onset, therapeutic interventions, ocular relapses, visual outcomes and laboratory findings were recorded. Our cases were subsequently compared with those from a literature review.ResultsAmong 192 patients with RV, 11 (5.7%) were diagnosed with IRV. Seven patients with initially presumed IRV were reclassified as secondary after further evaluation. IRV generally affected adult women. Bilateral ocular involvement and retinal phlebitis were common findings. 72% of patients presented with visual loss, which was severe in 27%. Treatments used included systemic glucocorticoids (82%), additional immunosuppressive agents (27%), intravitreal therapy (37%), panretinal photocoagulation (37%) and pars plana vitrectomy (26%). The annual relapse rate was 0.46. Although final visual acuity was considered good in 86%, 45% experienced worsening and only 27% improved.ConclusionsIRV is a rare sight-threatening condition. Despite intensive local and systemic immunosuppressive treatment, visual improvement is observed in only 27% of cases. When IRV is suspected, a differential diagnosis excluding a systemic disease is always warranted. A multidisciplinary approach and a guided clinical, laboratory and imaging evaluation has proven to be useful to distinguish retinal single-organ vasculitis from secondary forms of RV.



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