An unusual presentation of neurosarcoidosis in an 11-year-old boy.

which typically develops between the ages of 20 and 40 years1. Neurosarcoidosis occurs in only 5-15% of adults with sarcoidosis, and is seldom reported in children2-5. Of the cases described in the literature, children were found more likely to present with seizures, and less commonly space-occupying lesions6. The tumefactive brain lesions are difficult to distinguish from the tumefactive demyelinating lesions of multiple sclerosis, from brain neoplasms, acute disseminated encephalo-myelitis (ADEM), or from parasitic foci7,8. We report the clinical and radiographic features of an 11-year-old boy with biopsy-proven neurosarcoidosis in order to highlight key features that distinguish neurosarcoidosis from tumefactive demyelination.