“…1 Imaging studies most commonly reveal bilateral, enhancing intraconal masses, however there may be extraconal lesions present as well. 1,2,4,8,11,17 Histopathology of orbital lesions show diffuse xanthogranulomatous findings including histiocytes, Touton giant cells, and fibrous tissue with clustered plasma cells, lymphocytes, and eosinophils. Histiocytes exhibit positive expression of CD68 and are negative for CD1a and S-100, differentiating this disease from Langerhans cell histiocytosis.…”