Cerebellitis

Case contributed by Dr Abdulmajid Bawazeer

Presentation

Fever, headache, vomiting and postural instability.

Patient Data

Age: 11 years
Gender: Male
CT

There is an almost diffuse hypodensity involving the right cerebellar hemisphere causing loss of white-grey matter differentiation and minimal mass-effect on the fourth ventricle and midbrain, without calcification or hemorrhage.

MRI

There is diffuse cortical edema of the right cerebellar hemisphere which appears hypointense on T1, hyperintense on T2, FLAIR, DWI and ADC images.

This cerebellar edema causes mild compression on the right midbrain. No evidence of enhancement after contrast administration.

Case Discussion

Cerebellitis is a rare disorder which usually presents with a headache, nausea, vomiting, and ataxia.  

CT scan shows diffuse right cerebellar hypodensity which is not specific, however, MRI with contrast is more reliable to narrow the differential diagnosis.

Complications such as obstructive hydrocephalus and tonsillar herniation should be considered in this entity.

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Case information

rID: 63148
Published: 17th Sep 2018
Last edited: 14th Aug 2019
Inclusion in quiz mode: Included

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