Toxoplasmosis chorioretinitis mimicking acute retinal necrosis associated with local corticosteroid

International Journal of Retina and Vitreous
Jason N CrossonSteven Yeh

Abstract

The cases discussed highlight the atypical presentation and diagnostic dilemmas of toxoplasmosis with fulminant retinal necrosis and the potentially devastating visual outcomes of toxoplasma chorioretinitis following local corticosteroid exposure. We report a series of three patients who presented with toxoplasmosis mimicking severe acute retinal necrosis. Patients were between 59 and 77 years old and had been exposed to local corticosteroids preceding our evaluation. All patients demonstrated diffuse retinal whitening with severe vision loss on presentation. Polymerase chain reaction testing (PCR) was diagnostic in two patients, and histopathologic examination of a vitrectomy specimen was diagnostic in one patient. All cases of retinitis resolved with anti-parasitic medication; however, visual acuity failed to improve in all patients due to disease severity and presentation. Local corticosteroid injection may trigger or exacerbate toxoplasmosis chorioretinitis, leading to fulminant retinal necrosis and severe vision loss. Toxoplasma chorioretinitis should be considered in the differential diagnosis of patients presenting with clinical features of acute retinal necrosis, particularly following local corticosteroid injection reg...Continue Reading

References

Nov 26, 1998·The British Journal of Ophthalmology·E H Bosch-Driessen, A Rothova
Jul 26, 2002·American Journal of Ophthalmology·Christine FardeauPhuc Lehoang
Mar 31, 2004·Ophthalmology·Darius M MoshfeghiJanet L Davis

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