Fig. 5.

Myxoid liposarcoma with only minimal FDG avidity. a Axial FDG PET scan through the lower pelvis demonstrates only minimal FDG avidity in the known myxoid liposarcoma (arrowhead). Such minimal activity should not be misinterpreted as postoperative change, inflammation, or some other benign process. Physiological FDG avidity is noted in the right testis (arrow). b Axial CT at the same level demonstrates the myxoid liposarcoma as a mixed-attenuation mass (arrowhead) with regions of attenuation lower than muscle representing the myxoid component of the tumour