ORBITAL LIPOGRANULOMA - A CASE-REPORT

We present a case of orbital lipogranuloma with a supero-nasal retrobu lbar localisation associated with axial proptosis and major choroidal thickening. No clinical sign of inflammation, neither orbital nor in t he posterior segment, was revealed. The systemic work-up as well as pa raclinical data were within normal limits. The diagnosis was made afte r histopathologic examination of the biopsy taken via superior orbit. Outcome was favorable following long-term systemic corticotherapy. Orb ital lipogranuloma is a rare particular form of orbital pseudotumour o f unknown etiology. It is characterized, histologically, by orbital fa t necrosis. Pathogenesis remains controversial. The differential diagn osis includes iatrogenic lipogranulomas secondary to sinus surgery (pa raffinoma), orbital granulomas in sarcoidosis and Wegener's disease an d orbital lymphomas. The prognosis is usually good following treatment with steroids.