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53-year-old man with lung cancer metastatic to brain.
A, Axial T1-weighted turbo spin-echo gadolinium-enhanced MR image, obtained according to protocol, shows left occipital metastasis (arrow).
B, Axial T1-weighted turbo spin-echo ferumoxytol-enhanced MR image obtained 1 day after image in A shows left occipital metastasis (arrow). Although enhancement is slightly less intense, mass is clearly visible and similar in size.
