745292.fig.003a
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745292.fig.003b
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745292.fig.003c
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Figure 3: MR imaging of the tumor (arrows). (a) T1W, sagittal section shows an ovoid lesion with intermediate signal intensity, slightly higher than that of muscle. (b) T2W, axial section shows that the lesion has a high signal center and an intermediate signal periphery. After administration of paramagnetic contrast agent, there is both central and peripheral-periosteal enhancement. ((c) sagittal T1W + CM, (d) axial T1W FatSat + CM). The perilesional soft tissues show no signs of invasion. The findings are atypical.