Demographics:
7 years old, Female
Indication:
Headache, dizziness
Findings
- Patchy hypoattenuation in the bilateral cerebellar hemispheres with mass effect in the posterior fossa resulting in crowding of the fourth ventricle and inferior descent of the right greater than left cerebellar tonsils into the foramen magnum
- Enlargement of the lateral and third ventricles with mild rounding of the temporal horns and mild subependymal edema
Diagnosis
Cerebellitis
Sample Report
Findings concerning for generalized cerebellar edema. Specifically, there is patchy hypoattenuation in the bilateral cerebellar hemispheres with mass effect in the posterior fossa resulting in crowding of the fourth ventricle and right greater than left cerebellar tonsillar herniation.
Enlargement of the lateral and third ventricles with mild rounding of the temporal horns and subependymal edema is concerning for developing obstructive hydrocephalus.
No discrete posterior fossa mass lesion is identified by CT and findings could reflect an underlying infectious/inflammatory process, but MRI of the brain with and without contrast is recommended for further evaluation.
Discussion
References