The third presentation is cutaneous inverted papillomas, which have more in common clinically with intracutaneous
cornifying epitheliomas.
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.
Sebaceous gland tumors This group of tumors include sebaceous hyperplasia,
sebaceous epithelioma, sebaceous adenoma, and sebaceous adenocarcinoma.
1951 Vitamin D treatment is found to be effective against Hodgkin's disease (a cancer of the lymphatic system) and
epithelioma.
The infundibular keratinizing acanthoma (synonyms are intracutaneous cornifying
epithelioma, keratinizing epithelioma, keratoacanthoma) arises from the upper part of the follicle (infundibulum) so may have a pore opening onto the surface.