Cutaneous horn - Cutaneous Cornuhttps://en.wikipedia.org/wiki/Cutaneous_horn
Cornu cutaneum (Cutaneous horn) sunt tumores keratinosi inusitata specie cornuum vel interdum lignei vel coralli. Solent parvae et locales, sed in casibus rarissimis, multo majores esse possunt. maligna vel praemaligna esse possunt.

Malignitas inest usque ad 20% casuum, cum carcinomate squamosi (squamous‑cell carcinoma) frequentissimo. Incidensia carcinomatis squamosi est 37% cum laesio in penis adest.

Diagnosis et curatio
#Skin biopsy
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  • A biopsy necessarium est ut cancer cutis, sicut carcinoma squamosum (squamous cell carcinoma), saepe adest.
  • Magnitudo typica et locus (auris).
References Cutaneous Horn 33085427 
NIH
Cutaneous horn radicaliter incrementum visibile quod cornu animalis albi vel flavi simile est cum illud aspicis. Nunc late intellegitur haec cornu cutaneum reactionem ad diversas cutis quaestiones esse, nonnullas benignas, nonnullas praemalignas potentialiter malignas. Actinic keratoses frequentissimae sunt causa praemaligna, cum squamous cell carcinoma (SCC) est causa carcinomatosa frequentissima.
A cutaneous horn is usually evident upon physical examination and can be described as a white or yellow exophytic protrusion in the shape of an animal horn. Cutaneous horns are now widely accepted as a reactive cutaneous growth caused by a variety of benign, premalignant, or malignant primary processes. Actinic keratoses are the most common premalignant primary cause of cutaneous horn, while squamous cell carcinoma (SCC) is the most common malignant cause.
 Cutaneous horn: a potentially malignant entity 20043059
Cornu cutaneum (Cutaneous horn) est tumor keratinosus insolitus, qui cornu, interdum lignum vel corallium simile. Terminus describit structuram insolitam cellulis cutaneis induratis, quod non est morbus specificus. Cornua cutanea possunt evolvi cum variis conditionibus benignis, praecancerosis, vel malignis. Sollicitudo praecipua distinguit inter maculam cutis solis laesam et potentialem carcinomam, sicut carcinoma squamosum (squamous cell carcinoma). Altera noxa est keratoacanthoma, quae tumorem unguis elevatum exhibet. Curatio typice involvit cornu removendo et sub microscopio explorando ad cancrum reprimendum.
Cutaneous horn is a dense, cone-shaped growth with thickened skin, often resembling an animal's horn. It's a term describing an unusual buildup of hardened skin cells, rather than a specific disease. Cutaneous horns can develop alongside various benign, pre-cancerous, or cancerous skin conditions. A key concern is distinguishing between a thickened sun-damaged skin spot and a potentially cancerous growth like squamous cell carcinoma. Another culprit is keratoacanthoma, which presents as a raised, nail-like tumor. Treatment typically involves removing the horn and examining it under a microscope to check for cancer.