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A previously healthy 69-year-old man presented to the emergency department with right orbital pain and blurred vision for 1 day. He denied fever or recent trauma history. On examination, he had subconjunctival haemorrhage, chemosis and proptosis (figure 1). His neurologic examination revealed right-sided ophthalmoplegia. His vital signs were stable, and the rest of the physical examination and laboratory study were unremarkable.
What is the most likely diagnosis for this patient?
Contributors Conception or design of the work was done by SCY. Data collection was performed by SCY. SCY and CWL performed the data analysis and interpretation. Drafting the article was done SCY. Critical revision of the article was done by CWL. Both authors gave final approval of the version to be published.
Funding The authors have not declared a specific grant for this research from any funding agency in the public, commercial or not-for-profit sectors.
Competing interests None declared.
Patient and public involvement Patients and/or the public were not involved in the design, or conduct, or reporting or dissemination plans of this research.
Provenance and peer review Not commissioned; internally peer reviewed.
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