• S Froelich, C Botelho, M Abu Eid, P Kehrli, J-L Dietemann, and D Maitrot.
• Service de Neurochirurgie, Hôpital de Hautepierre, CHU de Strasbourg, avenue Molière, 67098 Strasbourg Cedex. sebastien.froelich@chru-strasbourg.fr
• Neurochirurgie. 2006 Dec 1; 52 (6): 551-4.

AbstractWe describe a rare case of parietal intradiploic encephalocele in a 51-year-old woman with no history of head trauma. The patient presented with a 1-month history of left hemiparesthesia. A hard indolent scalp lesion was palpable on examination in the right parietal area. Skull x-rays and cranial computed tomography examination demonstrated a lytic lesion that was consistent with a malignant osteolytic skull lesion. Magnetic resonance imaging of the head revealed an intradiploic cyst that included a round tissue mass contiguous with the parietal cortex. Surgery confirmed the diagnosis of encephalocele and the patient underwent surgical resection of the herniated brain, duraplasty, and cranioplasty. The presenting hemiparesthesia persisted at the 6-month follow-up. Encephaloceles of the cranial vault are a rare complication of skull fractures and rarely occur in adults. These lesions can be difficult to distinguish from congenital encephaloceles in patients with no history of head trauma. The pathogenesis, clinical and radiological nuances and the role of surgery are discussed.

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