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01-10-2020 | Thymoma | Clinical Case Report

Improvement of reduced electroretinographic responses in thymoma-associated retinopathy: a case report and literature review

Authors: Kei Mizobuchi, Takaaki Hayashi, Satoshi Katagiri, Euido Kim, Yasutsugu Ishiba, Sumiko Watanabe, Takahisa Furukawa, Tadashi Nakano

Published in: Documenta Ophthalmologica | Issue 2/2020

Abstract

Purpose

To report a patient with thymoma-associated retinopathy presenting as having a good visual prognosis.

Methods

Case report and literature review.

Case report

A 42-year-old female patient was referred to our hospital for complaints of sudden visual-field defects bilaterally. Decimal corrected visual acuity (VA) was 1.5 and 1.2 in the right (RE) and left eyes (LE), respectively. Fundus autofluorescence revealed hyper-autofluorescence from the posterior pole to mid-peripheral retina in both eyes. Full-field electroretinography (ERG) amplitudes were reduced to 20–50% and 30–50% of our controls for the scotopic and photopic conditions, respectively. A systemic examination revealed the presence of thymoma, and the patient underwent thymectomy and immunosuppression therapies. Immunohistochemical analysis using the patient’s serum showed immunolabeling on the photoreceptor inner segment and outer plexiform layer in the monkey retina. Two years later, VA remained at 1.5 and 1.2 in RE and LE. ERG amplitudes improved to 30–60% of the controls for the scotopic conditions. However, photopic ERG showed no remarkable change.

Conclusions

To our knowledge, improvement of reduced rod-mediated ERG responses has not been described in seven previously reported patients with thymoma-associated retinopathy. The good visual prognosis of our patient may be associated with well-timed intervention.

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Title: Improvement of reduced electroretinographic responses in thymoma-associated retinopathy: a case report and literature review
Authors: Kei Mizobuchi
Takaaki Hayashi
Satoshi Katagiri
Euido Kim
Yasutsugu Ishiba
Sumiko Watanabe
Takahisa Furukawa
Tadashi Nakano
Publication date: 01-10-2020
Publisher: Springer Berlin Heidelberg
Keywords: Thymoma
Thymectomy
Thymoma
Thymectomy
Published in: Documenta Ophthalmologica / Issue 2/2020
Print ISSN: 0012-4486
Electronic ISSN: 1573-2622
DOI: https://doi.org/10.1007/s10633-020-09764-1

Keynote webinar | Spotlight on medication adherence

Springer Medicine

Improvement of reduced electroretinographic responses in thymoma-associated retinopathy: a case report and literature review

Abstract

Purpose

Methods

Case report

Conclusions

Keynote webinar | Spotlight on medication adherence

Springer Medicine

Abstract

Purpose

Methods

Case report

Conclusions

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