Fig. 3
H&E staining at × 400 magnification shows proliferation of stromal mononuclear cells mixed with variable numbers of multinucleated giant cells (arrows). The multinucleated giant cells exhibit vesicular nuclei with prominent nucleoli that are similar to those seen for stromal cells (mononuclear stromal cells are present between multinucleated giants with several examples of stromal cells indicated by arrowheads). Rounded macrophage-like cells can also be seen (thin arrows)