ADC map of extramedullary plasmacytoma
A 77 year old male with extramedullary plasmacytomas of the left leg. (A) Axial DWI with b value = 50 sec/mm2 (B) Axial DWI with b value = 600 sec/mm2. The masses (arrows) show high signal intensity on DWI images, with progressively higher relative signal intensity on higher b-value images. (C) ADC map reveals homogeneously low ADC values of the tumors, ranging from 0.88 to 1.1, as compared to ADC values of approximately 1.7 for regional normal musculature, reflecting their highly cellular.