Image of the Month - IOTM

OCT

IOTM: Toxoplasmosis Retinochoroiditis

January 16, 2023
|  Netan Choudhry MD FRCS(C) FASRS

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Image of the Month (IOTM) is a collection of interesting clinical cases with high quality images for all relevant imaging modalities (ex: color fundus, OCT, OCTA, FAF, FA, En Face, Red-free, choroidal vasculography (CVG), anterior imaging) and other clinical results if relevant (ex: visual field plots). Each case is submitted by an eye care professional using one of Topcon’s industry-leading OCT devices.

Case background

A 57-year-old Indian female with a prior history of posterior uveitis was referred for scarring OD. BCVA 20/20 OU, diagnostic testing demonstrated +IgG antibodies to toxoplasmosis, IgM was negative. Upon further questioning, the patient did report a prior history of eating uncooked pork. Color Fundus photograph of the right eye (Image A) demonstrated several extrafoveal pigmented chorioretinal atrophy lesions. Enface Swept-Source OD (Image B) demonstrated several chorioretinal lesions. OCT B-scan of the macula (Image C) demonstrated outer retinal, ellipsoid zone, RPE, and atrophy of the choriocapillaris. 24mm posterior pole structural B-scan OCT (Image D) revealed two regions of retinal atrophy. 

— Netan Choudhry, MD FRCS(C) FASRS

Diagnosis: Toxoplasmosis Retinochoroiditis

Captured with: Topcon DRI OCT Triton Swept-Source

DRI OCT Triton Images:
A. Color Fundus Image
B. Enface Swept-Source OCT Image
C. OCT B-Scan of the Macula
D. OCT B-Scan

Slide A
Slide B
Slide C
Slide D
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The opinions, ideas, views and assumptions expressed are the author’s own and do not necessarily represent the views of Topcon, nor do they constitute advice from Topcon.

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