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要約 目的:小児に発症した傍中心窩毛細血管拡張症2例の報告。症例:6歳と7歳の男児が学校検診で片眼の視力低下を指摘され受診した。所見:矯正視力はそれぞれ0.2と0.08であった。両症例とも,傍中心窩に散在する網膜毛細血管瘤,囊胞様黄斑浮腫,輪状の硬性白斑があった。蛍光眼底造影では傍中心窩領域の全域に網膜毛細血管拡張,毛細血管瘤,色素漏出があり,Gass分類の1A群,Yannuzzi分類の血管瘤型の傍中心窩毛細血管拡張症と診断した。レーザー光凝固を行い,囊胞様黄斑浮腫は軽快し,視力はそれぞれ0.4,0.1に改善した。結論:小児にも傍中心窩毛細血管拡張症が起こることがある。光凝固の是非については,将来の瘢痕拡大の問題があるので慎重に対応する必要がある。
Abstract. Purpose:To report idiopathic juxtafoveolar retinal telangiectasis in two children. Cases:Unilateral impairment of visual acuity was detected in two schoolboys aged 6 and 7 years during routine health check. Findings:Corrected visual acuity was 0.2 and 0.08 each. Both cases showed retinal capillary microaneurysm in the perifoveal area,cystoid macular edema(CME),and circinate exudates. Fluorescein angiography showed telangiecatasia and capillary microaneurysms around the fovea with dye leakage. Both cases were diagnosed with juxtafoveolar retinal telangiectasis corresponding to group 1A by Gass or aneurysmal type by Yannuzzi. Laser photocoagulation was followed by remission of CME and improved visual acuity to 0.4 and 0.1 respectively. Conclusion:These cases illustrate that idiopathic juxtafoveolar retinal telangiectasis may develop in children. Precaution is necessary regarding photocoagulation because of the possibility of atrophic creep later.
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