Cerebellar agenesis with hypoplastic pons (pontocerebellar hypoplasia)

Case contributed by Dr Ernest Lekgabe


Longstanding severe ataxia and hyperreflexia.

Patient Data

Age: 20
Gender: Male

Absent cerebellum. Slightly small posterior fossa filled with CSF and contiguous with the fourth ventricle. Hypoplastic pons. Midbrain and medulla are spared.

Normal size and morphology of the corpus callosum. The midline structures including the optic chiasm, nerves and tracts are unremarkable. No abnormal parenchymal signal. Supratentorial ventricular and sulcal pattern is within normal limits.

Case Discussion

Pontocerebellar hypoplasia syndromes is a group of rare genetic conditions with 10 subtypes and resulting in small posterior fossa and hypoplastic cerebellum and pons. Complete cerebellar agenesis is extremely rare.

PlayAdd to Share

Case information

rID: 57224
Published: 17th Dec 2017
Last edited: 16th Jul 2018
Inclusion in quiz mode: Included

Updating… Please wait.

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

 Thank you for updating your details.