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Figure 4: Histologic section of the tumor (Hematoxylin-Eosin ×400). Giant, multinucleated cells, lacking atypia or mitotic activity are present. The arrow points to one of these cells. Giant cells are disposed isolated or in small nests in abundant stroma. This is composed of spindle-shaped cells (some with storiform disposition, also lacking atypia or mitotic activity) and extravasated erythrocytes.