cutaneous horn
英[kju(:)ˈteinjəs hɔ:n]美[kjuˈteniəs hɔrn]
Cutaneous horns, also known by the Latin name cornu cutaneum, are unusual keratinous skin tumors with the appearance of horns, or sometimes of wood or coral. Formally, this is a clinical diagnosis for a "conical projection above the surface of the skin.