A case report of orbital pseudotumor with presentation like orbital cellulitis

Purpose: To report a patient with orbital pseudotumor masquerading as orbital cellulitis Case report: A 42-year-old woman was referred to orbit and oculoplastic clinic with 6 days history of left orbital pain, proptosis, lid edema and fever. Clinical finding included severe lid edema, chemosis, conjunctival injection and severe restriction in extraocular motility. She was diagnosed as orbital cellulitis and hospitalized for treatment with intravenous antibiotics. Because of no improvement, on the fifth day after admission, systemic corticosteroid, was prescribed. Diagnosis of orbital pseudotumor was made after significant response to systemic corticosteroids. Antibiotics were discontinued and systemic corticosteroid was tapered slowly during the 4 months. Conclusion: Orbital pseudotumor is an ophthalmologic condition that may mimic a variety of pathologic processes. Despite complete physical examination and appropriate imaging, sometimes correct diagnosis of the disease would be difficult.