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Figure 10. (a) T2* weighted axial scan showing a 10 mm external iliac lymph node (arrows) prior to the administration of ultra small iron oxide particles (USIOPs). (b) T2* weighted axial scan following administration of USIOPs showing the 10 mm left external iliac node losing all central signal after administration of the USIOPs (arrow). The capsule of the node (arrowhead) and hilum (curved arrow) are clearly seen. (c) Histological specimen of the same lymph node showing normal macrophages through out the node without evidence of metastatic tumour deposits.
