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cutaneous horn
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." They are usually small and localized, but can, in very rare cases be much larger. Although often benign, they can also be malignant or premalignant.
==Etiology==
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. Other cases have reported cutaneous horns arising from burn scars. As with many other wart-like skin conditions, a link to the HPV virus family, especially the HPV-2 subtype has been suggested.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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