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Updated: Aug 11, 2026

A Murine Model of Subarachnoid Hemorrhage
Published on: November 21, 2013
Spontaneous hemorrhage in an intraorbital arteriovenous malformation
M Moin1, R C Kersten, F Bernardini
1Department of Ophthalmology, University of Cincinnati, Cincinnati, Ohio, USA.
Objective:
To report the clinical findings and management of spontaneous hemorrhage in an unsuspected intraorbital arteriovenous malformation.
Design:
Interventional case report.
Methods:
Review of clinical findings, radiologic studies, and treatment of the patient.
Results:
A 75-year-old woman sought treatment for the rapid onset of severe proptosis. Orbital exploration of a "mass" imaged on computed tomography scan and magnetic resonance imaging resulted in massive intraoperative hemorrhage. Subsequent arteriographic and histopathologic analysis confirmed an underlying orbital arteriovenous malformation.
Conclusions:
Spontaneous intraorbital hemorrhage from an arteriovenous malformation is extremely rare, but should be considered in the differential diagnosis of rapidly progressive proptosis.
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