A mark left where damaged tissue has healed. The body repairs a lesion by increasing collagen production at the site of damage. If the edges of a lesion are brought together during healing, a narrow, pale scar forms; if the edges are left apart, more extensive scarring occurs. A hypertrophic scar is a large, unsightly scar that sometimes develops at the site of an infected wound; some people have a family tendency to develop such scars. (See also adhesion; keloid.)
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