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Case of the Week

Section Editors: Matylda Machnowska1 and Anvita Pauranik2
1University of Toronto, Toronto, Ontario, Canada
2BC Children's Hospital, University of British Columbia, Vancouver, British Columbia, Canada

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August 18, 2014

Intraventricular Migration of Silicone Oil

  • Silicone is used to provide mechanical tamponade after retinal detachment.
  • Ventricular migration is a rare complication of intravitreous silicone oil injection.
  • It is hypothesized that silicone enters the optic nerve and dissects into the perioptic subarachnoid space, subsequently migrating to the ventricles.
  • Key Diagnostic Features: Hyperdense material in a nondependant portion within the ventricular system
  • DDx: Blood, pantopaque

Suggested Reading

Tatewaki Y, Kurihara N, Sato A, et al. Silicone oil migrating from intraocular tamponade into the ventricles: case report with magnetic resonance image findings. J Comput Assist Tomogr 2011;35:43–45, 10.1097/RCT.0b013e3181fc938d

Williams RL, Beatty RL, Kanal E, et al. MR imaging of intraventricular silicone: a case report. Radiology 1999;212:151–54, 10.1148/radiology.212.1.r99jl27151

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