Abstract
Eosinophilic granuloma is a type of histiocytosis X that is a benign bone tumor. Multifocal extradural and intradural involvement in adults is extremely uncommon because 90% of cases occur in boys younger than 10 years. The etiology of this disease is unknown, but it occurs with the accumulation of eosinophils and histiocytes in the medullary layers of the bone. The beginning of the inflammatory process in the dural membrane after migration of Langerhans cells may result in intradural involvement and sinus invasion into the nearby tissue. For multiple bone lesions, the use of chemotherapy, radiotherapy, and systematic cortisone is effective. In this study, we discuss the case of a 44-year-old man with sinus compression and multiple painful cranial swellings who was admitted to our clinic.
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