In the bone marrow that has been diffusely infiltrated by tumour cells, it is thought that the high degree of disappearance of fat cells and the increase in infiltration by tumour cells have significant effect on the HU value of the lesion site [16], [18], and this may be the reason why DESCT using bone(fat) had a better correlation with β2-microglobulin levels than bone(water) in this study. Here, HLA-G is linked to neoplasm.