Figure 4. Immunohistochemical techniques. A) Intense positivity with the cytokeratin cocktail (pan keratin) in the epithelioid and spindle cell components of the tumour. B and C) High magnification of the spindle cell component where coexpression of pan keratin (B) and vimentin (C) can be identified. D) Positivity with CD68 in the OGC and the histiocytes. E and F) Overexpression of p53 in the neoplastic epithelial (E) and spindle cell components (F). Original magnification: 40× (A); 100× (B, C, D, E and F). Ref: OGC: osteoclast-like giant cells.
