Spectral-domain OCTにて観察されたchoroidal excavationの検討

Findings of choroidal excavation by spectral-domain optical coherence tomograph

要約　目的：脈絡膜陥凹（choroidal excavation）をspectral-domain光干渉断層計（OCT）で観察した所見の報告。対象と方法：過去44か月間に脈絡膜陥凹と診断した15例16眼を対象とした。男性12例13眼，女性3例3眼で，年齢は44～90歳，平均62歳である。結果：9眼には眼底疾患がなく，3眼に加齢黄斑変性，2眼に中心性漿液性脈絡網膜症，1眼に成人型卵黄様変性，1眼に傍中心窩毛細血管拡張症があった。加齢黄斑変性2眼と傍中心窩毛細血管拡張症1眼には，脈絡膜陥凹部に漿液性網膜剝離があり，治療後に脈絡膜陥凹部の網膜剝離は消退した。結論：脈絡膜陥凹に網膜疾患が併発し，治療により消退することがある。

Abstract.　Purpose：To report findings of choroidal excavation observed by spectral-domain optical coherence tomograph（OCT）. Cases and Method：This retrospective study was made on 16 eyes of 15 cases who were diagnosed with choroidal excavation by spectral-domain OCT during the past 44 months. The series comprised 13 eyes of 12 males and 3 eyes of 3 females. The age ranged from 44 to 90 years, average 62 years. Findings：Nine eyes were free of fundus lesions. Age-related macular degeneration was present in 3 eyes, central serous chorioretinopathy in 2 eyes, adult-onset vitelliform macular degeneration in one eye, and parafoveal telangiectasia in one eye. Serous retinal detachment was present in 2 eyes of age-related macular degeneration and in one eye with parafoveal telangiectasia. Retinal detachment resolved after treatment. Conclusion：Choroidal excavation may be associated with retinal lesion that may disappear after treatment.