case_images: PMC3754412_01
case_images: Figure 1: Magnetic resonance imaging (MRI) revealed a heterogeneous contrasting lesion on upper right femur: hypointense on T1 and hyperintense on T2 weighted images
case_images: ajcr-4-27.f1.jpg
case_images: PMC3754412_01_ajcr-4-27.f1.jpg
case_images: F1
case_images: Adjacent soft tissues showed increased density and thickness (Fig. 1).
case_images: Figure 2:Numerous eosinophils. X400 H/E
case_images: ajcr-4-27.f2.jpg
case_images: PMC3754412_01_ajcr-4-27.f2.jpg
case_images: F2
case_images: Microscopically there were numerous bean shaped atypical histiocytes, eosinophils and neutrophils (Fig. 2).
case_images: Figure 3: Atypic histiocytes showing strong S100 positivity
case_images: ajcr-4-27.f3.jpg
case_images: PMC3754412_01_ajcr-4-27.f3.jpg
case_images: F3
case_images: Immunohistochemically, these atypical histiocytes were CD1A, S100,CD3 positive (Fig. 3).