Case contributed by Frank Gaillard

CT Brain


Occipital bone soft tissue mass, clearly extradural, destroying the bone. 

MRI Brain


A soft tissue mass which is of low T2 signal and demonstrates vivid contrast enhancement is located within the occipital bone. It displaces the torcual anteriorly without invasion or occlusion. 

Case Discussion

The patient went on to have a resection which histologically confirmed chloroma (also known as a granulocytic sarcoma or myeloid sarcoma) of the occipital bone.

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.