EPCAM and basal cell carcinoma: As both tumors fall into the category of blue basaloid dermal tumors with peripheral palisading and the mesenchymal component with formation of papillary mesenchymal bodies in some trichoblastomas is sparse, immunohistochemistry is often required, with trichoblastomas generally being diffusely positive for BerEp4 and basal cell carcinomas; while mostly showing positivity, the reaction is often patchy [3,11].