Frontoethmoidal encephalocele presenting with a parietal lobe arachnoid cyst in a patient with benign intracranial hypertension: A case report
Seçil Bahar1, Gunter Hafiz1, Mehdi Sasani2
1VKV Amerikan Hastanesi, Kulak Burun Boğaz Hastalıkları Bölümü, İstanbul, Türkiye
2VKV Amerikan Hastanesi, Beyin Cerrahisi Bölümü, İstanbul, Türkiye
Keywords: Arachnoid cyst, benign intracranial hypertension. congenital, encephalocele.
Abstract
Encephalocele is defined as the herniation of cerebral tissue through a skull base defect. If the herniated tissue includes only meninges, it is termed as meningocele or if it includes brain tissue with meninges, it is termed as menigoencephalocele. Arachnoid cysts are developmental lesions located within the arachnoid membrane surrounded by collagen and arachnoid matter cells. Herein, we present a case of frontoethmoidal encephalocele accompanied by an arachnoid cyst mass in the left parietal lobe in whom benign intracranial hypertension was identified during follow-up. Underlying benign intracranial hypertension should be always kept in mind in case of coexistence of arachnoid cysts and encephalocele.