Retrolaminar chiasmal migration of intraocular silicone oil masquerading as subarachnoid hemorrhage on CT head

Eyad Hamad; Javeria Azhar; Talha Allam

doi:10.1016/j.radcr.2023.06.065

Retrolaminar chiasmal migration of intraocular silicone oil masquerading as subarachnoid hemorrhage on CT head

Radiol Case Rep. 2023 Jul 22;18(10):3463-3466. doi: 10.1016/j.radcr.2023.06.065. eCollection 2023 Oct.

Authors

Eyad Hamad¹, Javeria Azhar², Talha Allam³

Affiliations

¹ University of Illinois College of Medicine, Chicago, IL, USA.
² Midwestern University Chicago College of Optometry, Downers Grove, IL, USA.
³ Department of Radiology, Advocate Christ Medical Center, Oak Lawn, IL, USA.

Abstract

Silicone oil is used as a long-term treatment agent for intraocular tamponade to repair retinal detachments following vitrectomy. Retrolaminar migration of oil into the optic nerve is a rare complication, with migration into the optic chiasm being even more rare. Following imaging, this entity can be misdiagnosed as acute hemorrhage, aneurysm, or neoplasm on imaging possibly leading to delay of care or unnecessary interventions. We will discuss a case where the imaging findings were thought to represent a small acute subarachnoid hemorrhage possibly related to an aneurysm involving the distal right internal carotid artery.

Keywords: CT head; Misdiagnosis; Retrolaminar migration; Seizure; Silicone oil; Subarachnoid hemorrhage.

Publication types

Case Reports