- a benign epithelial neoplasm of the skin. It presents as a papular or nodular lesion. Morphologically, it is characterized by the presence of hyperkeratosis, acanthosis, papillomatosis, and prominent acantholysis.
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Source: Data courtesy of the U.S. National Library of Medicine. Since the data might have changed, please query MeSH on Acantholytic acanthoma for any updates.