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Acanthoma macrocellulare (magn. 10×)
Specialty Oncology Edit this on Wikidata

An acanthoma is a skin neoplasm composed of squamous or epidermal cells. It is located in the prickle cell layer.[1]

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).[2] At that time, PubMed indexed only 206 articles with the term "acanthoma" (the term usually in the title or abstract).


  1. ^ "acanthoma" at Dorland's Medical Dictionary
  2. ^ Medline Data Changes for 2005 NLM Technical Bulletin 2004 November–December; 341

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