(a) CT showing a right undisplaced femoral neck fracture (Garden Stage II) (white arrowhead). (b) Blood cytology with oil red staining showing a small number of fat droplets in the background and a small number of cells that appeared to be histiocytes with fat in their cytoplasm (black arrowheads). (c) Diffusion-weighted MRI showing scattered punctate hyperintense signals in the watershed regions of the bilateral cerebrum (white circles). (d) Susceptibility-weighted imaging (SWI) showing diffuse hypointense lesions in the cerebrum (white circles).