Chiari 1.5 malformation

Case contributed by Dr Abdulmajid Bawazeer


The patient came with a history of neck pain for a long time.

Patient Data

Age: 18 years
Gender: Female

Overcrowding of posterior cranial fossa, Tonsillar herniation, caudal displacement of the medulla and posterior angulation of the odontoid process.

No hydrocephalus or syringohydromyelia.

Case Discussion

The Chiari 1.5 malformation is defined as a tonsillar herniation within a Chiari I malformation with additional caudal descent of the brain stem through the foramen magnum which is not evident in isolated Chiari type I.

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Case information

rID: 68345
Published: 10th Aug 2019
Last edited: 14th Aug 2019
Inclusion in quiz mode: Included

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