Chiari malformation, an anomaly of the posterior cranial fossa, also known as Arnold–Chiari malformation, was described in autopsies by Hans Chiari, an Austrian pathologist, in 1891. He defined four ...

Chiari malformation type I (CMI) is a congenital neurological disorder characterized by the herniation of cerebellar tonsils through the foramen magnum, leading to impaired cerebrospinal fluid (CSF) ...

Chiari malformation is a condition characterized by cerebellar tonsillar herniation of ≥5 mm below the level of the foramen magnum. Ms B, a 33-year-old white woman, presents with a complaint of severe ...

Chiari Malformation Type I: (Left) T2-weighted sagittal MRI; (Right) T2-weighted axial MRI. Note that in Chiari malformation type I the brainstem and cerebellar tonsils descend below the foramen ...

A 6 year-old girl presented with neck pain, difficulty walking and numbness over the neck and upper shoulders. Chiari Malformation Type I and Syrinx: (Left) T2-weighted sagittal MRI of the spine; ...

Our material consists of 314 cases. Sixty-seven are used as source material for data on operative results, 44 being used solely for this purpose and the remainder employed for both this purpose and an ...