| http://www.w3.org/ns/prov#value | - Furthermore, even when there is a well-defined enhancing tumor nidus, infiltrating tumor and isolated tumor cells can extend several centimetres beyond the enhancing region into the surrounding edematous" zone and, in some cases, beyond any abnormality seen on CT or MRI. Finally, for all practical purposes, bulk calcium emits no MR signal, making tumor calcification difficult or impossible to det
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