Glossary term:

Chiari II (type 2)

Chiari type 2 malformations form during development, inside the womb, and are part of the condition known as spina bifida. Spina bifida is also very commonly associated with hydrocephalus, which may be the dominant cause of symptoms, with the associated Chiari type 2 malformation being essentially asymptomatic. Other anatomical abnormalities associated with Chiari type 2 are tethered cord, lipomas, dermoid tumours and diastematomyelia, as well as syringomyelia.