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33歳女性に蝶形紅斑と手足の腫脹が4か月前に発症した。全身性エリテマトーデス(SLE)と診断され,6週前から副腎皮質ステロイド薬と複数の抗癌剤の全身投与を受けていた。結膜浮腫が生じ,その精査のため眼科を受診した。網膜浮腫以外には眼科的に異常所見はなかった。その2か月後に両眼の視力障害が突発した。右眼底に出血が混在する黄白色の滲出斑があり,サイトメガロウイルス網膜炎(CMV網膜炎)が疑われた。ただちに上記の投薬を中止し,ガンシクロビルとγグロブリンの全身投与を開始した。さらに4週後に左眼に同様の病変が発症した。1か月後に両眼の眼底病変は軽快し,その3週後に薬剤投与を中止した。20か月後の現在まで再発はない。全経過を通じ,血清などからCMVは検出されていない。本症例で眼底病変が治癒に至った理由として,ガンシクロビルが奏効しただけでなく,ステロイド薬や抗癌剤の中止で患者の免疫力が回復したことが推定された。
A 33-year-old woman had been diagnosed with systemic lupus erythmatosus 4 months before. She had been receiving systemic corticosteroid and anticancer drugs since 6 weeks. She was referred to us for bilateral conjunctival edema. No eye lesions were found except conjunctival edema. Bilateral visual impairment developed 2 months later. Her right fundus showed yellowish exudates with retinal vasculitis. The findings were pathognomonic for cytomegalovirus (CMV) retinitis. She was treated by prompt withdrawal of above medications and by intravenous ganciclovir and γ-globulin. Similar fundus lesions developed in her left eye another 4 weeks later. Thereafter, the fundus lesions in both eyes started to improve to stabilize one month later. She has been doing well during the ensuing 20 months after withdrawal of all medications. During the whole course of the disease, no CMV was detected by serological means. We presumed that the beneficial fate of fundus lesions was due to ganciclovir as well as withdrawal of corticosteroid and anticancer agents which contributed to recovery of the immunological status of the patient.
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