A member asked:

What is an arnold chiari malformation?

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Dr. Nikolaos Zacharias answered

Specializes in Maternal-Fetal Medicine

Result of ONTD.: Chiari ii malformation (cm-ii), also known as arnold-chiari malformation, is a fetal condition characterized by downward displacement of the cerebellar vermis and tonsils, a brainstem malformation with beaked midbrain on neuroimaging, and a spinal myelomeningocele (open spina bifida). The spinal defect is the etiology of the chiari ii malformation of the cerebellum and brainstem.

Answered 12/29/2016

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