MRI
A lesion in the cord at the level of C3 is located centrally and to the right of the midline and surrounded by significant signal loss, consistent with hemosiderin. It also demonstrates intrinsic high T1 signal on non-contrast T1W images and enhancement on delayed images.
The bone marrow is uniformly fatty, more than expected for a 55-year-old. Similarly, the parotid glands are markedly atrophic, replaced by fat.
Features suggest prior irradiation.