<unk> s often contain Merkel cells; an immunostain for CK20 can be used to demonstrate this.
Trichoepithelioma
Generalized trichoepithelioma
Solitary trichoepithelioma
Angiokeratoma
Desmoplastic trichoepithelioma
Lymphoepithelioma
Medulloepithelioma
Nevus sebaceous