Case 5: Imaging question 2

CASE 5: Explanation of Imaging Findings

MRI without and with contrast

CASE 5

A brain MRI without and with contrast was performed. Select images are shown.

Questions

1. What are the above sequences?

2. Where is the abnormality located?

There is a mass within the left cerebellar hemisphere that causes mass effect on the adjacent 4th ventricle.

3. Describe the abnormality using appropriate terminology.

4. Why are the lateral ventricles enlarged?

5. What is the differential diagnosis for this abnormality?

6. Is this an example of communicating or non-communicating hydrocephalus?

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