Meningoencephalocelewith Coexisting Large Arachnoid Cyst: Case Report of ayoung adult of South Asian origin

Meningoencephalocele or simply known asencephalocelesare rare congenital anomaly in which brain tissue herniates out through a defect in the cranium. They occur one in every 4000 live births. Depending on the site of defect, major types are posterior oroccipital type (85% of cases), anterior or nasofrontal type (15% of cases) and basal (10% of cases)(1). Anterior encephaoceles are commoner in South and Southeast Asian populatuon(2,3). Most cases present in infancy(4). The associated findings on imaging are hydrocephalus (15%), corpus callosum agenesis (7%), arachnoid cyst (3%), porencephalic cyst (3%) and single ventricle (3%)5. Our case is unique as the presentation is in 25 years of age andthere ispresence of a associatedlarge arachnoid cystin posterior and middle cranial fossa.