[Pseudotumors of the orbit]

Eighteen patients suspected clinically to have an orbital pseudotumor are described. Besides ophthalmological examination also conventional radiological examination and computer tomography of the orbits and optic nerve canals have been carried out; all the patients exhibited changes in the orbits and 6 also in the nasal sinuses. Cytological examination of the material collected by biopsy has been performed in order to determine the type of the tumor. In 14 for 15 cytological examinations one could establish a diagnosis of inflammatory changes in the orbit; this has been further confirmed histopathologically or by the clinical process.