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Parasitic diseases involving brain and orbit are relatively rare in Tunisia; the most frequently encountered is the hydatid cyst, 55 examples of which were seen since CT scanning was introduced into Tunisia 2 years ago. Various aspects of the intracerebral and orbital hydatid cysts are reported and a tentative classification is made based on characteristics revealed by CT.

We report radiological features of a biopsy-proven early infantile form of Nasu-Hakoka disease in two Tunisian sisters with new bony and cerebral findings.