Hyperostosis associated with orbital vascular malformation

ABSTRACT

A previously healthy adult male presented with a slowly enlarging orbital mass associated with 5 mm of non-pulsatile proptosis. On imaging, a soft tissue lesion with avid contrast enhancement and associated bony hyperostosis was noted. The lesion and hyperostotic bone were surgically debulked, and significant arterial bleeding was noted intraoperatively consistent with an arteriovenous malformation. Histopathologic analysis revealed a vascular malformation with enhanced microvasculature infiltrating the periosteum. While vascular lesions elsewhere in the body can be associated with skeletal changes, bony hyperostosis is a rare feature of orbital vascular malformations.

KEYWORDS:

• Orbital
• vascular malformation
• hyperostosis

Acknowledgements

Dr Rootman has acted as a marketing consultant for Horizon pharmaceuticals and is a member of the speaker’s bureau. This work has not previously been submitted to a meeting or for publication.

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The authors report no conflicts of interest. The authors alone are responsible for the content and writing of the article.

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