The third presentation is cutaneous inverted papillomas, which have more in common clinically with intracutaneous cornifying epitheliomas. (lowchensaustralia.com)
Specifically, sebaceous epitheliomas grow out of the sebaceous glands of the skin. (web-dvm.net)
Pilomatricomas (also known as pilomatrixoma, or the necrotizing and calcifying epithelioma of Malherbe) are hair matrical tumors (developing in the root of the hair), seen in dogs. (brittonroadveterinaryclinic.com)