An Unusual Case of Pinna Squamous Cell Carcinoma Arising Shortly after Resection of Atypical Fibroxanthoma

Figure 9

(a) Photomicrograph of wide locally excised ulcerative, crusted lesion (H&E stain) at ×2 magnification. Nests of squamous cell carcinoma are seen infiltrating the dermal tissue without involvement of the underlying cartilage (cartilage is seen in the right-hand field). (b) ×4 magnification of the same area; this demonstrates infiltrating nests of keratinising squamous cell carcinoma associated with a host inflammatory response. (c) p63 immunohistochemistry confirms the squamous phenotype of the tumour (nuclear positivity).

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