Diagnostic approaches to severe, atypical toxoplasmosis mimicking acute retinal necrosis

Darius M. Moshfeghi, Emilio M. Dodds, Cristóbal A. Couto, Carmen I. Santos, Donald H. Nicholson, Careen Y. Lowder, Janet L Davis

Research output: Contribution to journalArticle

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Abstract

Purpose To describe the means of diagnosis and clinical features of atypical toxoplasmic chorioretinitis mimicking acute retinal necrosis. Design Observational case series. Participants Twenty-two patients (25 eyes) with widespread chorioretinitis resulting from toxoplasmosis examined between 1990 and 2001. Testing Patients were diagnosed by various techniques, including polymerase chain reaction (PCR) of aqueous and vitreous, serum and intraocular antibody determination, culture of intraocular fluid, retinal biopsy, histopathologic examination, therapeutic trial of antibiotics active against toxoplasmosis, or a combination thereof. Main outcome measures The primary outcome measure was diagnosis of disseminated toxoplasmic chorioretinitis by any combination of tests or by empiric use of specific antibiotics. The secondary outcome measure was visual and anatomic outcome of treatment. Results Mean age was 53.5 years (range, 19-77 years), with a median of 59.5 years. There were 9 women and 13 men. Six patients were infected with HIV, and 3 patients, 1 with HIV, had bilateral disease. Mean initial vision was 20/110 (median, 20/400; range, 20/20 to no light perception [NLP]). Sixteen patients (73%) had received oral or injectable corticosteroids and 11 (50%) had received antiviral therapy before the diagnosis of toxoplasmosis. Diagnosis was made solely by clinical response to antitoxoplasmosis medications in 4 patients. Sixteen patients were diagnosed based on evaluation of intraocular fluids and tissue by antibody determinations, culture, PCR, histopathologic examination, or a combination thereof. Visual acuity improved after treatment in 7 of 25 eyes (28%). Mean final visual acuity was 20/156 (median, 20/2500; range, 20/30 to NLP). Anatomically, 18 of 23 eyes with follow-up had healed or improved chorioretinitis. Retinitis was progressive in 1 eye, 2 eyes were enucleated, and 2 were phthisical. Conclusions Diagnosis of atypical toxoplasmic chorioretinitis that mimics viral retinitis can be accomplished by several means. Prompt diagnosis may help avoid poor visual and anatomic outcomes after prolonged initial treatment with oral prednisone or antiviral medications.

Original languageEnglish
Pages (from-to)716-725
Number of pages10
JournalOphthalmology
Volume111
Issue number4
DOIs
StatePublished - Apr 1 2004

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Acute Retinal Necrosis Syndrome
Toxoplasmosis
Chorioretinitis
Retinitis
Aqueous Humor
Outcome Assessment (Health Care)
Visual Acuity
Antiviral Agents
Anti-Bacterial Agents
Light
Polymerase Chain Reaction
Antibodies
Therapeutics
Prednisone
HIV-1
Adrenal Cortex Hormones
HIV
Biopsy
Injections

ASJC Scopus subject areas

  • Ophthalmology

Cite this

Moshfeghi, D. M., Dodds, E. M., Couto, C. A., Santos, C. I., Nicholson, D. H., Lowder, C. Y., & Davis, J. L. (2004). Diagnostic approaches to severe, atypical toxoplasmosis mimicking acute retinal necrosis. Ophthalmology, 111(4), 716-725. https://doi.org/10.1016/j.ophtha.2003.07.004

Diagnostic approaches to severe, atypical toxoplasmosis mimicking acute retinal necrosis. / Moshfeghi, Darius M.; Dodds, Emilio M.; Couto, Cristóbal A.; Santos, Carmen I.; Nicholson, Donald H.; Lowder, Careen Y.; Davis, Janet L.

In: Ophthalmology, Vol. 111, No. 4, 01.04.2004, p. 716-725.

Research output: Contribution to journalArticle

Moshfeghi, DM, Dodds, EM, Couto, CA, Santos, CI, Nicholson, DH, Lowder, CY & Davis, JL 2004, 'Diagnostic approaches to severe, atypical toxoplasmosis mimicking acute retinal necrosis', Ophthalmology, vol. 111, no. 4, pp. 716-725. https://doi.org/10.1016/j.ophtha.2003.07.004
Moshfeghi DM, Dodds EM, Couto CA, Santos CI, Nicholson DH, Lowder CY et al. Diagnostic approaches to severe, atypical toxoplasmosis mimicking acute retinal necrosis. Ophthalmology. 2004 Apr 1;111(4):716-725. https://doi.org/10.1016/j.ophtha.2003.07.004
Moshfeghi, Darius M. ; Dodds, Emilio M. ; Couto, Cristóbal A. ; Santos, Carmen I. ; Nicholson, Donald H. ; Lowder, Careen Y. ; Davis, Janet L. / Diagnostic approaches to severe, atypical toxoplasmosis mimicking acute retinal necrosis. In: Ophthalmology. 2004 ; Vol. 111, No. 4. pp. 716-725.
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abstract = "Purpose To describe the means of diagnosis and clinical features of atypical toxoplasmic chorioretinitis mimicking acute retinal necrosis. Design Observational case series. Participants Twenty-two patients (25 eyes) with widespread chorioretinitis resulting from toxoplasmosis examined between 1990 and 2001. Testing Patients were diagnosed by various techniques, including polymerase chain reaction (PCR) of aqueous and vitreous, serum and intraocular antibody determination, culture of intraocular fluid, retinal biopsy, histopathologic examination, therapeutic trial of antibiotics active against toxoplasmosis, or a combination thereof. Main outcome measures The primary outcome measure was diagnosis of disseminated toxoplasmic chorioretinitis by any combination of tests or by empiric use of specific antibiotics. The secondary outcome measure was visual and anatomic outcome of treatment. Results Mean age was 53.5 years (range, 19-77 years), with a median of 59.5 years. There were 9 women and 13 men. Six patients were infected with HIV, and 3 patients, 1 with HIV, had bilateral disease. Mean initial vision was 20/110 (median, 20/400; range, 20/20 to no light perception [NLP]). Sixteen patients (73{\%}) had received oral or injectable corticosteroids and 11 (50{\%}) had received antiviral therapy before the diagnosis of toxoplasmosis. Diagnosis was made solely by clinical response to antitoxoplasmosis medications in 4 patients. Sixteen patients were diagnosed based on evaluation of intraocular fluids and tissue by antibody determinations, culture, PCR, histopathologic examination, or a combination thereof. Visual acuity improved after treatment in 7 of 25 eyes (28{\%}). Mean final visual acuity was 20/156 (median, 20/2500; range, 20/30 to NLP). Anatomically, 18 of 23 eyes with follow-up had healed or improved chorioretinitis. Retinitis was progressive in 1 eye, 2 eyes were enucleated, and 2 were phthisical. Conclusions Diagnosis of atypical toxoplasmic chorioretinitis that mimics viral retinitis can be accomplished by several means. Prompt diagnosis may help avoid poor visual and anatomic outcomes after prolonged initial treatment with oral prednisone or antiviral medications.",
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AU - Nicholson, Donald H.

AU - Lowder, Careen Y.

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N2 - Purpose To describe the means of diagnosis and clinical features of atypical toxoplasmic chorioretinitis mimicking acute retinal necrosis. Design Observational case series. Participants Twenty-two patients (25 eyes) with widespread chorioretinitis resulting from toxoplasmosis examined between 1990 and 2001. Testing Patients were diagnosed by various techniques, including polymerase chain reaction (PCR) of aqueous and vitreous, serum and intraocular antibody determination, culture of intraocular fluid, retinal biopsy, histopathologic examination, therapeutic trial of antibiotics active against toxoplasmosis, or a combination thereof. Main outcome measures The primary outcome measure was diagnosis of disseminated toxoplasmic chorioretinitis by any combination of tests or by empiric use of specific antibiotics. The secondary outcome measure was visual and anatomic outcome of treatment. Results Mean age was 53.5 years (range, 19-77 years), with a median of 59.5 years. There were 9 women and 13 men. Six patients were infected with HIV, and 3 patients, 1 with HIV, had bilateral disease. Mean initial vision was 20/110 (median, 20/400; range, 20/20 to no light perception [NLP]). Sixteen patients (73%) had received oral or injectable corticosteroids and 11 (50%) had received antiviral therapy before the diagnosis of toxoplasmosis. Diagnosis was made solely by clinical response to antitoxoplasmosis medications in 4 patients. Sixteen patients were diagnosed based on evaluation of intraocular fluids and tissue by antibody determinations, culture, PCR, histopathologic examination, or a combination thereof. Visual acuity improved after treatment in 7 of 25 eyes (28%). Mean final visual acuity was 20/156 (median, 20/2500; range, 20/30 to NLP). Anatomically, 18 of 23 eyes with follow-up had healed or improved chorioretinitis. Retinitis was progressive in 1 eye, 2 eyes were enucleated, and 2 were phthisical. Conclusions Diagnosis of atypical toxoplasmic chorioretinitis that mimics viral retinitis can be accomplished by several means. Prompt diagnosis may help avoid poor visual and anatomic outcomes after prolonged initial treatment with oral prednisone or antiviral medications.

AB - Purpose To describe the means of diagnosis and clinical features of atypical toxoplasmic chorioretinitis mimicking acute retinal necrosis. Design Observational case series. Participants Twenty-two patients (25 eyes) with widespread chorioretinitis resulting from toxoplasmosis examined between 1990 and 2001. Testing Patients were diagnosed by various techniques, including polymerase chain reaction (PCR) of aqueous and vitreous, serum and intraocular antibody determination, culture of intraocular fluid, retinal biopsy, histopathologic examination, therapeutic trial of antibiotics active against toxoplasmosis, or a combination thereof. Main outcome measures The primary outcome measure was diagnosis of disseminated toxoplasmic chorioretinitis by any combination of tests or by empiric use of specific antibiotics. The secondary outcome measure was visual and anatomic outcome of treatment. Results Mean age was 53.5 years (range, 19-77 years), with a median of 59.5 years. There were 9 women and 13 men. Six patients were infected with HIV, and 3 patients, 1 with HIV, had bilateral disease. Mean initial vision was 20/110 (median, 20/400; range, 20/20 to no light perception [NLP]). Sixteen patients (73%) had received oral or injectable corticosteroids and 11 (50%) had received antiviral therapy before the diagnosis of toxoplasmosis. Diagnosis was made solely by clinical response to antitoxoplasmosis medications in 4 patients. Sixteen patients were diagnosed based on evaluation of intraocular fluids and tissue by antibody determinations, culture, PCR, histopathologic examination, or a combination thereof. Visual acuity improved after treatment in 7 of 25 eyes (28%). Mean final visual acuity was 20/156 (median, 20/2500; range, 20/30 to NLP). Anatomically, 18 of 23 eyes with follow-up had healed or improved chorioretinitis. Retinitis was progressive in 1 eye, 2 eyes were enucleated, and 2 were phthisical. Conclusions Diagnosis of atypical toxoplasmic chorioretinitis that mimics viral retinitis can be accomplished by several means. Prompt diagnosis may help avoid poor visual and anatomic outcomes after prolonged initial treatment with oral prednisone or antiviral medications.

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