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ブドウ膜炎で初発し,続いて右眼にもブドウ膜炎が発症し,その経過中に左眼平滑筋腫が発見された1例を報告し,その手術所見,病理組織学的所見について考按した。
虹彩の平滑筋腫は,光顕像のみでは,neurofibroma, amelanotic malignant melanoma,やschwannoma等と鑑別することが困難で,その鑑別診断には電顕による検索が必要である。
虹彩平滑筋腫は臨床的に他の虹彩悪性腫瘍と鑑別できないため,腫瘍の部位,大きさ,浸潤状態を十分に検査した上で,適当な術式を選択すべきである。
Leiomyoma of the iris in the left eye of a 44-year-old male was removed by basal iridectomy and was subjected to histopathological studies. This case had been treated with corticosteroid for uveitis for the past 6 months. As leiomyoma of the iris is extremely rare, differential diagnosis of leiomyoma from amelanotic malignant melanoma, schwannoma and neurofibrinoma should be made by electron microscopic means. Because of difficul-ty in the differential diagnosis of malignant tumors of the iris on clinical features, the therapeutic ap-proach will have to be determined with the various possibilities in mind.
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