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完全寛解状態にある急性リンパ性白血病症例に,髄膜浸潤が白血病性視神経症で発症した1例を経験し,寛解期の眼科検査の必要性を強調した。
(1)発症時,片眼性乳頭浮腫・後極部広範囲の刷毛状出血・静脈怒張を呈し,CT所見で患側視神経の肥厚をみた。2カ月後には,動脈の閉塞性変化・視神経乳頭および網膜の萎縮像を呈した。
(2)乳頭浮腫の発生は白血病細胞浸潤に由来し,視機能障害の原因は白血病細胞の視神経への浸潤に加えて,網膜の循環障害が関与していると結論した。
An 8-year-old boy developed acute unilateral visual loss during the remission of acute lymphocy-tic leukemia which had been under treatment for the past 13 months. Funduscopy revealed disc edema, widespread flame-shaped retinal hemor-rhages, venous dilatation and tortuosity in the af-fected eye. Swelling of the optic nerve was proven by CT-scanning. Pleocytosis and malignant cells were present in the cerebrospinal fluid (CSF), sug-gesting the infiltration of leukemic cells in the central nervous system.
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