A Rare Cutaneous Adnexal Tumor: Malignant Proliferating Trichilemmal Tumor

Figure 2

Immunochemical study of the malignant proliferating trichilemmal tumor. Focal CD34 staining is remarkably observed in the cells with translucent cytoplasm and basaloid fields (DAP, ×100) (a). Nuclear Ki-67 staining is remarkably observed in the tumor cells with translucent cytoplasm (DAP, ×200) (b). A diffused and strong staining with P53 is observed (DAP, ×200) (c).