Cerebellopontine angle epidermoid cyst

Case contributed by Dr Louie Ye


Record of patient's presentation is missing.

Patient Data

Age: 50 years
Gender: Female

In the right cerebellopontine angle a 12 mm diameter region of CSF intensity on all conventional sequences demonstrates prominent high signal on diffusion weighted imaging, and is associated with minor mass effect of the middle cerebellar peduncle. It does not appear to extend into the internal acoustic meatus, and is predominantly posterior to the 7th and 8th cranial nerves. The remainder of the brain is unremarkable with no intra or extra-axial abnormality.

Conclusion: Features are characteristic of a small right cerebellopontine angle epidermoid cyst.

Case Discussion

Patient was followed up for 4 years with no evidence of further growth of the small right cerebellopontine angle epidermoid cyst.

How to use cases

You can use Radiopaedia cases in a variety of ways to help you learn and teach.

Creating your own cases is easy.

Updating… Please wait.

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

 Thank you for updating your details.