Magnetic resonance imaging of soft-tissue tumors of the extremities: A practical approach

Figure 13 Malignant fibrous histiocytoma. A: Axial T1-weighted MR image of the forearm shows a soft-tissue tumor (arrowhead) with a relatively well-defined margin. No invasion to the adjacent radius or ulna was noted; B: Axial T2-weighted MR image shows heterogeneous signal intensity of the tumor mass (arrowhead), with an area of low signal intensity (arrow), suggesting fibrosis; C: Axial gadolinium-enhanced T1-weighted image with fat saturation shows enhancement of the parenchymal tissue (arrow) of the tumor mass (arrowhead), corresponding to the hypervascular part of the tumor. MR: Magnetic resonance.