T1-weighted turbo spin echo MRI with gadolinium contrast of the right thigh in axial plane. A 23 × 12.5 × 8.5 cm heterogeneous mass (yellow arrow) abutting but not infiltrating the femur (green arrow). There is a peripheral fat component and central non-lipogenic enhancing component measuring 12.6 × 12.6 × 8.3 cm. There is no invasion of the profunda femoris artery/vein (red arrow), or superficial femoral artery/vein and posterior division of the femoral nerve (blue arrow). The rectus femoris muscle is partially encased by the tumor. The sartorius and vastus muscles are partially encased and posteriorly displaced by the tumor.MRI, magnetic resonance imaging