Figure 4.

Histopathological findings. A: (HE staining, Magnification, obj. 10×) Histological sample from the margin of the tumour to show fibrous tumour tissue with newly built woven bone. B: (HE staining, Magnification, obj. 40×) Histological sample from the centre of the tumour to show the characteristic spindle-shaped cells. The associated fibres are arranged in interlacing bands or fascicles (Herring-bone pattern).