Anton syndrome with bilateral occipital infarct: A case report

Anton syndrome results from damage to the visual cortex of the occipital lobes, where the anterior visual pathways remain intact. This damage results in the characteristic triad of cortical blindness, visual anosognosia, and visual confabulation. This case describes an 80-year-old male with a backgr...

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Main Author: Dylan Mankoo, MBBS, MClinEd
Format: Article
Language:English
Published: Elsevier 2023-12-01
Series:Radiology Case Reports
Subjects:
Online Access:http://www.sciencedirect.com/science/article/pii/S1930043323006714
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author Dylan Mankoo, MBBS, MClinEd
author_facet Dylan Mankoo, MBBS, MClinEd
author_sort Dylan Mankoo, MBBS, MClinEd
collection DOAJ
description Anton syndrome results from damage to the visual cortex of the occipital lobes, where the anterior visual pathways remain intact. This damage results in the characteristic triad of cortical blindness, visual anosognosia, and visual confabulation. This case describes an 80-year-old male with a background of renal transplant 7 years prior, admitted to hospital with worsening transplant function, and soon after developed sudden onset cortical blindness. On examination, the patient was found to be in denial of his blindness and showed signs of visual confabulation, both of which pointed toward a diagnosis of Anton syndrome. Radiological investigation with computed tomography (CT) and magnetic resonance imaging (MRI) revealed bilateral ischemic stroke of the occipital lobes, which was later theorized to have occurred due to sirolimus-induced thrombotic microangiopathy (TMA). To the author's knowledge, this is the first case report of sirolimus-induced TMA, bilateral ischemic occipital lobe stroke, and Anton's syndrome, within the same diagnosis. This case highlights that a diagnosis of bilateral occipital stroke with denial of blindness should suggest a diagnosis of Anton syndrome. This report also discusses the importance of differentiating bilateral occipital infarction on CT imaging, from posterior reversible encephalopathy syndrome (PRES), using MRI.
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spelling doaj.art-ff7031d4fca445778ce6814f45b4a7cc2023-10-22T04:48:50ZengElsevierRadiology Case Reports1930-04332023-12-01181244614464Anton syndrome with bilateral occipital infarct: A case reportDylan Mankoo, MBBS, MClinEd0Corresponding author.; Norfolk and Norwich University Hospitals NHS Foundation Trust, Colney Lane, Colney, Norwich, United Kingdom, NR4 7UYAnton syndrome results from damage to the visual cortex of the occipital lobes, where the anterior visual pathways remain intact. This damage results in the characteristic triad of cortical blindness, visual anosognosia, and visual confabulation. This case describes an 80-year-old male with a background of renal transplant 7 years prior, admitted to hospital with worsening transplant function, and soon after developed sudden onset cortical blindness. On examination, the patient was found to be in denial of his blindness and showed signs of visual confabulation, both of which pointed toward a diagnosis of Anton syndrome. Radiological investigation with computed tomography (CT) and magnetic resonance imaging (MRI) revealed bilateral ischemic stroke of the occipital lobes, which was later theorized to have occurred due to sirolimus-induced thrombotic microangiopathy (TMA). To the author's knowledge, this is the first case report of sirolimus-induced TMA, bilateral ischemic occipital lobe stroke, and Anton's syndrome, within the same diagnosis. This case highlights that a diagnosis of bilateral occipital stroke with denial of blindness should suggest a diagnosis of Anton syndrome. This report also discusses the importance of differentiating bilateral occipital infarction on CT imaging, from posterior reversible encephalopathy syndrome (PRES), using MRI.http://www.sciencedirect.com/science/article/pii/S1930043323006714Anton syndromeNeuroradiologyStroke
spellingShingle Dylan Mankoo, MBBS, MClinEd
Anton syndrome with bilateral occipital infarct: A case report
Radiology Case Reports
Anton syndrome
Neuroradiology
Stroke
title Anton syndrome with bilateral occipital infarct: A case report
title_full Anton syndrome with bilateral occipital infarct: A case report
title_fullStr Anton syndrome with bilateral occipital infarct: A case report
title_full_unstemmed Anton syndrome with bilateral occipital infarct: A case report
title_short Anton syndrome with bilateral occipital infarct: A case report
title_sort anton syndrome with bilateral occipital infarct a case report
topic Anton syndrome
Neuroradiology
Stroke
url http://www.sciencedirect.com/science/article/pii/S1930043323006714
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