In myxoid liposarcoma, it shows low signal intensity mass with high signal intensity foci on T1-weighted MRI images. The mass shows high signal intensity on T2-weighted images. This is because it contains predominantly mucoid substance (accounts for low signal intensity on T1) and small amount of mature fat (accounts for high signal intensity on T1). The mass is well-defined, lobulated, multiloculated, or oval in shape without any infiltration into surrounding structures.
