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A case of Susac syndrome with 35 years of follow-up Norio Okamoto 1 1Okamoto Eye Clinic pp.437-445
Published Date 2025/4/15
DOI https://doi.org/10.11477/mf.037055790790040437
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Abstract Purpose:During the calibration of a case of idiopathic branch retinal artery occlusion amenable to long-term observation(Rinsho Ganka 2016), Dr. Koichi Shimizu, a former professor at Gunma University, suggested that the condition might be Susac syndrome. We reviewed the findings from the time of initial diagnosis to the present and reported them here.

Case:The patient, a 17-year-old female individual, visited the Department of Ophthalmology at Hyogo Medical University because of a visual field abnormality in her left eye. She had a history of migraine headaches. At the time of initial examination, her visual acuity was 1.2 corrected in the right eye and 1.5 corrected in the left eye. Fundus examination revealed that the right and the left eyes were normal. The patient was followed up at the Department of Ophthalmology, Hyogo Medical University from 1990 to 2009 and at our hospital from 2010 to 2024. Nine onset of Gass plaques, two spasms, and three arteritis were observed during follow-up. In some cases, collaterals between arteries were observed after the onset of Gass plaques. Later, the collaterals were found to have Gass plaques. Thirty-five years later, in the old age, visual acuity was 1.0. Fundus examination revealed severe narrowing of retinal arteries, zonal retinal thinning on OCT, and decreased macular vascular density on OCTA.

Conclusion:Gass plaques in patients with Susac syndrome differ from those observed in patients with retinal artery occlusion. Additionally, attention should be paid to the multiple recurrences of the disease.


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電子版ISSN 1882-1308 印刷版ISSN 0370-5579 医学書院

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