Chiari 1.5 malformation

Case contributed by Dr Rodrigo Dias Duarte

Presentation

Patient with headache and dizziness. No other complaints. No trauma.

Patient Data

Age: 30
Gender: Female
MRI

Herniation of the cerebellar tonsils through the foramen magnum (about 2.0 cm), including bulb and obex herniation, associated with retroflexion of the odontoid process, with a compressive effect on the bulb, which is reduced in anteroposterior thickness.

Diagram

See annotations on the image.

Case Discussion

Chiari 1.5 Malformation  is defined as a cerebellar tonsillar hernia (Chiari 1) in addition to some portion of the brainstem through the foramen magnum. It is believed that when congenital, it is the progression of Chiari malformation type 1.

PlayAdd to Share

Case information

rID: 50409
Case created: 3rd Jan 2017
Last edited: 14th Jan 2017
Inclusion in quiz mode: Included

Updating… Please wait.
Loadinganimation

Alert accept

Error Unable to process the form. Check for errors and try again.

Alert accept Thank you for updating your details.