Acanthoma

An acanthoma is a skin neoplasm composed of squamous or epidermal cells. It is located in the prickle cell layer. An acanthoma is a skin neoplasm composed of squamous or epidermal cells. It is located in the prickle cell layer. Types of acanthoma include pilar sheath acanthoma, a benign follicular tumor usually of the upper lip; clear cell acanthoma, a benign tumor found most frequently on the legs; and Degos acanthoma, often confused with but unrelated to Degos disease. In 2005, 'Acanthoma' was added to MeSH as an index term; previous indexing was 'Skin Neoplasms' (1965–2004). At that time, PubMed indexed only 206 articles with the term 'acanthoma' (the term usually in the title or abstract).