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(G−7PM−4) 胸腺腫がなくステロイド薬に抵抗する眼筋型重症筋無力症4例に胸腔鏡下拡大胸腺摘出術を行った。年齢は54歳から69歳,平均62歳であった。重症筋無力症の手術までの持続期間は4か月から288か月であった。術後57か月まで経過を追跡した。全身症状は2例で治癒,2例で改善した。眼症状では,全例で眼瞼下垂が消失し,眼球偏位が改善した。複視は2例で残存し,うち1例は長期罹患例であった。以上の成績から,薬物に抵抗する眼筋型重症筋無力症に対して早期の胸腺摘出術が有効でありうることが結論される。
We reviewed 4 cases of myasthenia gravis with ocular involvement treated by extended thymectomy. None of the cases had thymoma or responded to systemic corticosteroid. The ages ranged from 54 to 69 years, average 62 years. Myasthenia gravis had been present for 4 to 288 months. Cases were followed up for up to 57 months after surgery. Complete and partial remission of systemic symptoms resulted in 2 cases each. All the 4 cases showed cure of blepharoptosis and improvement in ocular deviations. Diplopia persisted in 2 cases including one with long-standing history. The findings show the usefulness of early thymectomy for myasthenia gravis with ocular involvement which fails to respond to medica-tions including systemic corticosteroid.
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