The incidence of squamous-cell carcinoma increases to 37% when the cutaneous horn is present on the penis.

[3] The cause of cutaneous horns is still unknown, but it is believed that exposure to radiation can trigger the condition.

This is evidenced by a higher rate of cases occurring on the face and hands, areas that are often exposed to sunlight.

[4] As with many other wart-like skin conditions, a link to the HPV virus family, especially the HPV-2 subtype has been suggested.

[5] Histologically they are characterized by compact proliferation of keratin Treatment is surgical excision