CEACAM5 and Epidermal Inclusion Cyst: Dini and Colafranceschi used antibodies against low molecular weight cytokeratin CAM 5.2, a cocktail of cytokeratin AE1/AE3, CEA, collagen type IV and laminin of the basement membrane and only observed a slight positivity for cytokeratin AE1/AE3 within the amorphous calcified mass, which was probably due to dystrophic calcification of epidermoid cysts [5].