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Giant congenital nevus - Definition


Giant nevi are more commonly known as giant congenital nevi. This type of nevus is present at birth, and resembles an oversized mole, as it is defined as measuring 20 cm minimum in diameter, and can cover much larger surfaces of the skin. The most significant problem associated with this type of nevus, with the exception of its unappealing aspect, is the heightened incidence of it evolving into a melanoma, in other words, skin cancer. For this reason, removal by ablation of a giant congenital nevus is sometimes recommended.