_:vb50952708 . _:vb50952708 "url:https://www.ncbi.nlm.nih.gov/books/NBK13668/"^^ . _:vb50952708 . _:vb50952708 "A bone cancer that is located_in the area behind the eye and derives_from the orbit or secondarily derives_from an adjacent source (eyelid, paranasal sinus, or intracranial compartment). It results_in the eye pushing forward causing a bulging of the eye called proptosis."^^ . _:vb50952708 . _:vb50952708 . _:vb50952708 .