Nasal-type Natural Killer/T-cell Lymphoma of the Orbit

Purpose: To report two cases of nasal type Natural Killer (NK)/T-cell lymphoma of the orbit. Methods: (Case 1) A 42-year-old woman presented with a 3-month history of painful proptosis and eyelid swelling in the right eye. Under the diagnosis of inflammatory pseudotumor, she was treated with intravenous and oral steroids. She visited our clinic with a 3-day history of proptosis with decreased visual acuity. Computed tomography (CT) revealed a...