Keloid

**Definition:** A sharply elevated, irregularly shaped, progressively enlarging scar resulting from formation of excessive amounts of collagen in the dermis during connective tissue repair. It is differentiated from a hypertrophic scar (CICATRIX, HYPERTROPHIC) in that the former does not spread to surrounding tissues.

**Tree numbers:** - A10.165.450.300.425 - C17.300.200.425 - C23.550.355.274.510