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FIG 7. Patient 18, with PCNSL. Axial T1-weighted images without (A) and with (B) gadolinium show intense ring-enhancing lesions in the head of both caudate nuclei. In the T1-weighted image with ferumoxtran-10 produced 15 days later (C), the lesions in the caudate head are larger and show more intense enhancement. Another lesion is visible in the splenium of the corpus callosum that also shows larger and more intense enhancement than seen on the baseline gadolinium image (not shown). Low-intensity changes in both lesions are visible on T2-weighted images after ferumoxtran-10 administration (D and E).
