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Sagittal spin echo T1WI through the upper thigh shows a large, bilobed, low intensity lesion with a thin, mildly hyperintense wall along the posterior aspect of the thigh and gluteal region.

 Sagittal spin echo T1WI through the upper thigh shows a large, bilobed, low intensity lesion with a thin, mildly hyperintense wall along the posterior aspect of the thigh and gluteal region.