Sebaceous adenomatous proliferation at the base of a cutaneous horn is rare. A review of 90 cutaneous horns from our laboratory disclosed no similar changes, and we have found no record of a similar case.
Ritchie EB, Mullins JF. Sebaceous Adenomatous Proliferation at the Base of a Cornu CutaneumReport of a Case. Arch Dermatol. 1968;98(4):392. doi:10.1001/archderm.1968.01610160066012