Role of MRI in the diagnosis and treatment of osteomyelitis in pediatric patients

Figure 12 Ewing sarcoma. A: Coronal T1-weighted image of the left tibia shows a long segment of intramedullary T1 hypointensity (solid arrow). Note abrupt transition to normal marrow signal inferiorly (arrowhead); B: Coronal fast multi-planar inversion recovery image of the same patient shows very intense T2 signal in the marrow cavity (solid arrow) with extraosseous extension (dashed arrow); C: T1-weighted post-contrast image shows very heterogeneous intramedullary enhancement associated with this lesion (solid arrow).