Chiari Type II malformation: Prenatal sonographic findings

Abstract

Chiari malformations (CM) are a group of defects associated with the congenital caudal displacement of the cerebellum and brainstem. A thorough understanding of the sonographic findings is necessary for the diagnosis of CM in the developing fetus. Here, we present the classical imaging findings of CM Type II detected in a 25-year-old primigravida at 26 weeks of gestation by routine sonographic screening.

Keywords

• Chiari malformation Type II
• posterior fossa abnormalities
• ultrasonographic screening