유리체강 내 실리콘기름의 대뇌로의 이동으로 인한 반대편안의 이측 시야결손
Temporal Hemianopsia of Healthy Eye in a Patient with Contralateral Silicone Oil Filled Eye
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목적: 유리체강 내 실리콘기름이 대뇌의 외측뇌실 및 시신경교차부로 이동하여 반대편안의 이측 시야결손이 발생한 증례를 경험하였 기에 이를 보고하고자 한다. 증례요약: 56세 남자가 10일 전부터 발생한 좌안의 이측반맹을 주소로 내원하였다. 3개월 전부터 우안 시력저하, 우안통 및 두통이 있었다. 타 병원에서 8년 전 우안 망막박리로 유리체절제술을 시행 받았으며, 수술 직후 재발한 망막박리에 대하여 두 차례 재수술 후 실리콘기름 삽입술을 시행 받은 상태였다. 안저검사상 우안의 녹내장성 시신경유두 변화와, 안압이 54 mmHg로 높은 상태였다. 시야검사상 좌안의 이측반맹이 관찰되었고, 대뇌 병변이 의심되어 뇌자기공명영상 촬영을 시행하였다. 뇌하수체 상부와 시신경교차부 의 오른쪽 위에 우안 유리체강 내의 실리콘기름과 동일한 신호강도를 보이는 물질이 관찰되었고, 추적관찰 중 실리콘기름의 외측뇌실 로의 이동 및 자세변화에 따른 위치 변화가 관찰되었다. 결론: 유리체절제술 후 실리콘기름 삽입술을 시행 받은 환자에서, 유리체강 내 실리콘기름이 시신경교차부로 이동하여 반대편안의 시야결손이 발생하였고, 뇌실로의 이동으로 시야결손이 호전된 증례를 경험하였기에 이를 보고하는 바이다.
Abstract
Purpose: To report a case of temporal hemianopsia of a healthy eye occurring in the contralateral silicone oil-filled eye due to migration of silicone oil into the optic chiasm and lateral ventricle. Case summary: A 56-year-old man visited our clinic with temporal hemianopsia for 10 days in the left eye. Three months before, the patient had presented with decreased vision and ocular pain in the right eye as well as a headache. The patient underwent vitrectomy at another hospital for the management of retinal detachment occurring in the right eye 8 years earlier. In addition, for recurred retinal detachment, reoperations were performed twice with silicone oil injection. Funduscopy revealed findings such as glaucomatous optic disc and an intraocular pressure of 54 mmHg in the right eye. On visual field examination, the temporal hemianopsia was detected in the left eye. Under the suspicion of cerebral lesions, a magnetic resonance imaging (MRI) examination was performed. On the right side of the optic chiasm and the suprasellar region, materials were present whose signal intensity was identical to silicone oil in the right vitreal cavity. During a follow-up, the migration of silicone oil into the lateral ventricle and the alteration of its location with the positional change were observed. Conclusions: In a patient who received silicone oil injection following vitrectomy, the silicone oil migrated to the optic chiasm and induced the occurrence of visual field defect in the contralateral eye. The visual field defect improved because of the migration into the lateral ventricle.
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