A 31-year-old Caucasian woman was referred to our ophthalmic oncology outpatient clinic with a 4-week history of right eye proptosis, bifrontal pressure like headaches and blurred vision in the right eye. The patient denied diplopia or facial numbness. Review of systems was positive for recent nasal congestion and cough. Past medical history included inflammatory bowel syndrome, hypercholesterolaemia, asthma and acute lymphocytic leukaemia (ALL) at the age of 6 years. She had been in remission since 1987 following treatment with chemotherapy (cytarabine, daunorubicin, hydrocortisone, L-asparaginase, methotrexate, vincristine, teniposide cyclophosphamide, etopo-side and prednisone), and prophylactic cranial irradiation with a total dose of 18 Gy.
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