Thickened masses of scar tissue, often produced for decoration in some cultures, are called

In many cultures, the people will burn themselves or cut themselves to have raised scars. These are purely for decoration. Some of the people will have special ones that show their ranks in the tribes. These are called "Keloids." They are thickened tissue that will be raised on the skin. This helps for the decorations to be seen more clearly. 

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On edgenuity it is d: watermelons