Usually, a cutaneous horn is several millimeters long, but they can grow to be quite large, upto 25 cm in some cases and 36 cm diameter in historic cases.
Histological considerations on a case of a voluminous cutaneous horn. Minerva Dermatol 1953;28(7):159-65.
Cutaneous horns consists of dense keratin that projects up from the surrounding skin in shapes resembling horns of animals.
Everard home John hunter and cutaneous horns: A historical review.
TABLE Some causes of cutaneous horn Benign--noninfectious Angiokeratoma Angioma Dermatofibroma Epidermal inclusion cyst ("sebaceous cyst") Linear verrucous epidermal nevus Fibroma Lichen simplex chronicus ("neurodermatitis") Lichenoid keratosis Prurigo nodularis Pyogenic granuloma Sebaceous adenoma Seborrheic keratosis Trichilemma Benign--infectious Condyloma acuminata (genital warts) Molluscum contagiosum Verruca vulgaris (common wart) Premalignant/malignant Actinic keratosis Basal cell carcinoma Bowen's disease Epidermoid carcinoma Kaposi's sarcoma Keratoacanthoma Malignant melanoma Squamous cell carcinoma Sources: Gould and Brodell 1999, (1) Akan et al 2001, (6) Khaitan 1999.
(4.) Stavroulaki P, Mal RIL Squamous cell carcinoma presenting as a cutaneous horn. Auris Nasus Larynx 2000; 27:277-279.
DISSCUSSION: Giant cutaneous horns
are keratinous growths on the skin appearing as conical structure, with hard consistency, and smooth surface.
(cornu cutaneum) is a relatively rare nodular skin lesion and comprises of keratised material organised in the shape of an animal horn.1 Cutanneous horns usually arise on sun-exposed skiin but can occur even in sun-protected areas and in any part of the body.
DISCUSSION WITH REVIEW: A cutaneous horn
(Cornu cutaneum) is a protrusion from the skin consisting of cornified material resembling an animal horn in miniature.
Clinical diagnosis of cutaneous horn
over seborrheic keratosis or actinic keratosis was made.