Ewing Sarcoma of the Posterior Fossa in an Adolescent Girl

Figure 1

Preoperative MRI demonstrates a large contrast-enhancing dural-based tumor extending into the left posterior fossa forming two bulks. (a) T1-weighted noncontrast sagittal MRI. (b) T1-weighted contrast-enhanced sagittal view: short arrows indicate bone erosion. (c) T1-weighted contrast-enhanced axial MRI: short arrows indicate bone erosion. (d) T1-weighted contrast-enhanced coronary MRI. (e) Fluid attenuated inversion recovery- (FLAIR-) weighted coronal MRI. (f) T2-weighted axial view.

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