Keloid scars can grow larger than the original wound and are often raised and shiny.
From the express.co.uk
But there is still no citation to what appeared to be random speculation about keloid.
From the en.wikipedia.org
Persons of African descent are at increased risk of keloid occurrences.
From the en.wikipedia.org
This is a young male with bilateral keloid formation on the plantar surfaces of both feet.
From the en.wikipedia.org
I suggest your son get a second opinion from a dermatologist familiar with keloid scars.
From the dailyherald.com
Stepheme has a keloid growth that wraps around his entire right ear.
From the freep.com
Noting that the poor man in the photo likely suffers from keloid does not detract from that.
From the en.wikipedia.org
In fact, the same picture is used to illustrate the condition on the Wiki keloid page itself.
From the en.wikipedia.org
An explaination, fully half of the caption, that the scars may be keloid is off topic here.
From the en.wikipedia.org
More examples
Raised pinkish scar tissue at the site of an injury; results from excessive tissue repair
A keloid (also known as a "keloidal scar") is a type of scar, which depending on its maturity, is composed of mainly either type III (early) or type I (late) collagen. ...
(keloids) smooth, pink, raised, firm, fibrous growths on the skin that form secondary to injury.
(Keloids) Hard and fibrous swelling, formed by the skin around a scar.
(Keloids) Large scars that can be painful or itchy, and may also pucker which can occur anywhere on your body, developing more commonly where there is little underlying fatty tissue, such as on the breastbone or shoulders.
(Keloids) Occasionally scars enlarge spontaneously to form firm, smooth, hard growths called keloids that may be uncomfortable or itchy, and may grow much larger than the original wound. If there is excessive tension on a healing wound, the healing area can thicken more than usual. ...
(Keloids) a type of raised darkened scar, more common with dark skin. Due to a defect in the healing process.
(Keloids) are bead-like, very noticeable and disturbing scars that grow in the skin beyond the area of the wound. Usually there is a predisposition for keloid formation.
(Keloids) are scars that grow excessively. They can occur after an operation, burn, vaccination, or even ear piercing.