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Axial non-contrast
Occipital bone soft tissue mass, clearly extradural, destroying the bone.
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Axial T1
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.
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