中心性漿液性脈絡網膜症様の症状を呈した脈絡膜色素性母斑の2症例

Two cases of choroidal nevus with serous retinal detachment simulating central serous chorioretinopathy

　脈絡膜母斑に中心性漿液性脈絡網膜症に酷似する漿液性網膜剥離が黄斑部にある2眼2症例を経験した。1例は51歳男性，他の1例は34歳女性であった。脈絡膜母斑は低蛍光を呈した。網膜剥離の内部に蛍光色素の漏出があった。蛍光漏出点のある1例には，中心性漿液性脈絡網膜症に準じる弱い光凝固を行った。網膜剥離は消失したが，新しい漏出点が出現し，中心性漿液性脈絡網膜症よりも難治であった。これら2症例は，黄斑部の脈絡膜母斑に漿液性網膜剥離が併発し得ることを示している。脈絡膜母斑の診断にはインドシアニングリーン蛍光造影が有効であった。

We observed two cases of choroidal nevus with serous retinal detachment simulating central serous chorioretinopathy. One was a 51-year-old male and the other was a 34-year-old female. Both were unilaterally affected. Areas of choroidal nevus showed hypofluorescence. Fluorescein dye leakage was present within the area of retinal detachment. Spot of dye leakage in one eye received weak laser photocoagulation similar to central serous chorioretinopathy. Retinal detachment subsided only to be followed by another dye leakage spot. This case was more resistant to treatment than central serous chorioretinopathy. These cases illustrates that choroidal nevus may be associated with serous retinal detachment. Indocyanine green angiography was useful in identifying choroidal nevus.