Unique Presentation of Squamous Cell Carcinoma as Giant Cutaneous Horn

Abstract

Cutaneous horn is a conical, dense, and hyperkeratotic protrusion that often appears similar to the horn of an animal. Giant cutaneous horns are rare; no incidence or prevalence has been reported. The significance of cutaneous horns is that they occur in association with, or as a response to, a wide variety of underlying benign, premalignant, and malignant cutaneous diseases. Herein we report a unique case of a 60-year-old male with a giant cutaneous horn (size: 10 cm × 2 cm) projecting from the left angle of mouth, which is extremely rare. Wide local excision of the growth was done. Histopathologic examination showed verrucous carcinoma with negative margin. There is no recurrence after follow-up of 2 years.