Cutaneous horn - 皮角https://en.wikipedia.org/wiki/Cutaneous_horn
皮角 (Cutaneous horn) 是不尋常的角質腫瘤,外觀類似角,偶爾呈現木質或珊瑚狀。它們通常體積較小且局限於局部,但極少數情況下可較大。可為惡性腫瘤或癌前病變。

約 20% 病例伴隨惡性腫瘤,其中最常見的是鱗狀細胞癌。若病灶位於陰莖,鱗狀細胞癌的發生率可達 37%。

診斷與治療
#Skin biopsy
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  • 由於皮膚癌(例如鱗狀細胞癌)常見,需進行活檢。
  • 典型尺寸與位置(耳朵)
References Cutaneous Horn 33085427 
NIH
Cutaneous horn 基本上是一種可見的增生物,外觀類似白色或黃色的動物角。現在普遍認為,這些角的形成是對各種皮膚問題的反應——其中有些是良性的,另一些則可能發展為癌症。Actinic keratoses 是最常見的良性原因,而 squamous cell carcinoma (SCC) 則是最常見的惡性原因。
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
Cutaneous horn 是一種緻密的圓錐形生長物,皮膚增厚,外觀常類似動物的角。此術語描述的是硬化皮膚細胞的異常堆積,而非特定疾病。Cutaneous horns 可能伴隨各種良性、癌前或惡性皮膚病變。主要的臨床問題是要分辨增厚的曬傷斑與可能的癌性生長(如鱗狀細胞癌)。另一常見原因是角化棘皮瘤,表現為凸起的指甲狀腫瘤。治療通常採取切除角狀組織,並於顯微鏡下檢查以確定是否有癌變。
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.