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cutaneous hornJoe Segen2016-12-08T18:36:13+00:00
A popular term for a focal hyperkeratotic column arising in the head–where it mimics the horn of grazing mammals–and neck, face and yes, even the penis, in the background of a keratinising proliferation–e.g., solar, seborrhoeic, or inverted follicular keratoses, marsupialised tricholemmal or epidermoid cysts, verruca vulgaris, and squamous cell carcinoma* or sebaceous gland carcinoma.
*Up to 20% of cases have underlying squamous cell carcinoma.
Synonym Cornu cutaneum