Multiple orbital intraosseous hemangiomas.

The case of a 36-year-old healthy, asymptomatic man who was monitored for a slowly growing subcutaneous mass under his right inferior orbital rim for more than ten years is presented. The mass was hard, immobile, and nontender. Computed tomography (CT) documented a lytic lesion at the frontal process of the right maxilla. Four years later, magnetic resonance imaging (MRI) of the orbits revealed distinct lesions in the right zygoma, maxillary, and greater wing of the sphenoid bones. These lesions were hypointense with respect to orbital fat on T1-weighted images and hyperintense on T2-weighted series. There was moderate enhancement after contrast agent administration. These findings combined with the clinical features of the patient were suggestive of presumed multiple orbital intraosseous hemangiomas. Differential diagnosis between other osseous tumors of the orbit can be reasonably made based on imaging characteristics.