PMC3754412_01
Figure 1: Magnetic resonance imaging (MRI) revealed a heterogeneous contrasting lesion on upper right femur: hypointense on T1 and hyperintense on T2 weighted images
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F1
Adjacent soft tissues showed increased density and thickness (Fig. 1).
Figure 2:Numerous eosinophils. X400 H/E
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F2
Microscopically there were numerous bean shaped atypical histiocytes, eosinophils and neutrophils (Fig. 2).
Figure 3: Atypic histiocytes showing strong S100 positivity
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F3
Immunohistochemically, these atypical histiocytes were CD1A, S100,CD3 positive (Fig. 3).