TP53 and neoplasm: Immunohistochemical staining demonstrated that the tumor cells were positive for vimentin, bcl-2, CD34 (Figure 2(c)), CD99, CD10, S-100, c-kit, epithelial membrane antigen, cytokeratin AE1/AE3, progesterone receptor, p16 (Figure 2(d)), and p53 (Figure 2(e)), according to various grades of intensity (Table 1).