Article Topic: Chiari Type I Malformation Author: Marah Bassam Akhdar Keywords: Chiari Type I Malformation, Tonsillar Ectopia, Hydrocephalus, Neural Tube Defect, Posterior Fossa Anomalies Scientific editor: Dr.Omar Jbara  Linguistic editor: Philip Sweidan  Congenital Malformations & Perinatal Brain Injury Central Nervous System Malformations giving rise to mental retardation, cerebral palsy, neural tube defects and posterior fossa anomalies have an incidence rate of 1%-2%. Perinatal insults, brain injuries, genetic, and environmental factors interfering with normal central nervous system development could result in various birth defects [1]. Posterior Fossa Anomalies The most common manifestations of posterior fossa anomalies include the displacement or partial/complete […]