上顎洞癌放射線照射後の放射線網膜症

A case of radiation retinopathy following radiation for maxillary sinus carcinoma

　69歳男性の右上顎洞癌に対して，総量50Gyのライナック照射を行い，2年3か月後に右眼の放射線網膜症が生じた。著明な視神経乳頭浮腫，網膜出血，軟性白斑を伴う網膜下鼻側動脈の閉塞があった。網膜光凝固，副腎皮質ステロイド投与などの治療を行ったが初診から6か月後には硝子体出血をきたし，血管新生緑内障へと進展した。

A 69-year-old male was treated by Linac irradiation totalling 50 Gy for carcinoma of the right maxillary sinus. After 27 months, his right eye developed severe radiation retinopathy with papilledema, retinal hemorrhages and soft exudates. Fluorescein angiography showed occlusion of inferior nasal retinal artery. He was treated by panretinal photocoagulation and systemic corticosteroid. Vitreous hemorrhage developed followed by neovascular glaucoma 6 months later.