Cavernous Hemangioma: Being the most common benign neoplasm of the orbit in adults, cavernous hemangiomas are seen more often in middle age females.  The lesion can cause a slow progressive proptosis, induced hyperopia, optic nerve compression, increased IOP, strabismus, and retinal striae.  Probably the majority of these lesions are never detected until an imaging study is performed for other reasons.  On CT scan the tumor is smooth, well circumscribed, and located within the muscle cone.  Ultrasound examination reveals high amplitude echoes.  The hemangiomas may increase in size during pregnancy.  Resection is reserved for cases when the patient is extremely disabilitated by the lesion.  The lesion is encapsulated with large venous-like vessels.  Vessels may show thrombosis and calcification.  Septa between vessels are of various thickness.  Back to Orbit