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Intracranial intraosseous hydatid cyst. Case report and review of literature.

Cerebral hydatidosis accounts for approximately 1 to 3% of all cases of hydatid disease. Generally, cerebral hydatid cysts are single lesions located in the watershed of the middle cerebral artery. Primary intracranial extracerebral hydatid cysts are extremely rare. Only 2% of hydatid cysts are localized in the skeleton, and of these 3 to 4% are found in the skull. The authors describe the case of a 10-year-old boy who was admitted to their clinic with headache and unilateral focal epileptic seizures. Computerized tomography scanning revealed a right parietal intraosseous hydatid cyst. A case of cranial intraosseous hydatid disease is presented, and the differential diagnosis and treatment are discussed in the light of literature.