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a- Tumor cells are large in size, have vesicular nuclei and permanent nucleoli with plumpy cytoplasm. Brisk mitotic figures were also seen. b- Malignant cells are cytokeratin CAM 5.2 focally positive. c- IHC staining showing immunoreactivity for Vimentin. d- IHC staining showing immunoreactivity for WT-1. e- IHC staining focally positive for P63 and CK5/6. f- Tumor cells showing high Ki-67 index.
