Ocular immunology and inflammation · 2006
Reactivation of toxoplasma retinochoroiditis under atovaquone therapy in an immunocompetent patient.
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Baatz Holger, Mirshahi Alireza, Puchta Joachim, Gümbel Hermann, Hattenbach Lars-Olof
Аннотация
PURPOSE: To report a case of toxoplasma retinochoroiditis reactivation in an immunocompetent patient under atovaquone therapy.
METHODS: Case report.
RESULTS: A healthy woman with a history of bilateral toxoplasma retinochoroiditis since childhood presented with a reactivation of toxoplasma retinochoroiditis. Because earlier treatment regimens had either produced intolerable side effects and/or were deemed ineffective for the prevention of reactivation, the patient was started on atovaquone suspension (750 mg three times a day). After initial regression of the lesion and still under atovaquone therapy, the patient presented again five weeks later with worsened best-corrected visual acuity. Examination showed that the lesion had expanded again and more cells were present in the vitreous.
CONCLUSIONS: To our knowledge, this is the first report of a reactivation of toxoplasma retinochoroiditis in an immunocompetent patient under atovaquone therapy, possibly indicating tachyzoite resistance to atovaquone.
METHODS: Case report.
RESULTS: A healthy woman with a history of bilateral toxoplasma retinochoroiditis since childhood presented with a reactivation of toxoplasma retinochoroiditis. Because earlier treatment regimens had either produced intolerable side effects and/or were deemed ineffective for the prevention of reactivation, the patient was started on atovaquone suspension (750 mg three times a day). After initial regression of the lesion and still under atovaquone therapy, the patient presented again five weeks later with worsened best-corrected visual acuity. Examination showed that the lesion had expanded again and more cells were present in the vitreous.
CONCLUSIONS: To our knowledge, this is the first report of a reactivation of toxoplasma retinochoroiditis in an immunocompetent patient under atovaquone therapy, possibly indicating tachyzoite resistance to atovaquone.