<unk>  is a neoplasm of the adnexa of the skin. Its appearance is similar to basal cell carcinoma.
One form has been mapped to chromosome 9p21.
Trichoepithelioma
Angiokeratoma
Lymphoepithelioma
Medulloepithelioma
Warty dyskeratoma
Sebaceoma
Dermatofibroma
Keratoacanthoma