Atypical Inflammatory Orbital Pseudotumor with Acute Pneumonic Infiltrates

ABSTRACT

PURPOSE: Orbital pseudotumor is a nonspecific benign orbital inflammation without evidence of specific local or systemic cause. Orbital pseudotumor rarely displays predominant tissue eosinophilia without vasculitis. We report this rare case of eosinophilic orbital pseudotumor associated with acute pneumonic infiltrates. METHODS: A 27-year-old man visited our clinic because of painless swelling of the upper and lower lid and proptosis which developed 10 days ago. Subconjunctival mass showed severe eosinophilic infiltration, mild proliferation of capillaries, and non-necrotic vasculitis. We started steroid treatement under the diagnosis of atypical orbital pseudotumor with acute pneumonic infiltrates. RESULTS: At four days after starting steroid treatment, swelling of lids, proptosis and pulmonary infiltration disappeared. At four months there was no evidence of recurrence with the cessation of steroid.