Occipital condyle metastasis - into mastoid
Patient with known metastaic colorectal carcinoma presents with a lower motor neuron left Facial nerve palsy.
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Subtle left occipital condyle metastasis with fluid in the lower mastoid air cells. The bone is heterogeneous and a thin rim of abnormal soft tissue is visible on soft tissue windows.
The occipital condyle and base of skull generally is an important check area for bony metastases.