DR P. MARAZZI / SCIENCE PHOTO LIBRARY DR P. MARAZZI / SCIENCE PHOTO LIBRARY
Keloid scars. View of a 20 year-old woman's breast with a purple keloid scar seen 10 weeks after cosmetic breast reduction surgery (or mammoplasty). The scar follows the lines of incision made for the operation. Keloids are raised and hard irregularly-shaped itchy scars on the skin. They consist of a mass of collagen, a tough fibrous protein, formed as a result of a defective healing process. Keloid scar tissue may continue to grow. It often forms where healing injuries, burns or surgical incisions are under tension. In the early stages keloids may respond to local steroids or cryotherapy, but treatment is usually by re- excision.
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