For example,the accumulation of exuberant amounts of collagen can give rise to prominent,raised scars known as keloids Excess collagen deposition in the skin Thick connective tissue deposition in the forming a raised scar known as a keloid. dermis.Excess collagen deposition in the skin forming a raised scar known as a keloid. Thick connective tissue deposition in the dermis. For example, the accumulation of exuberant amounts of collagen can give rise to prominent, raised scars known as keloids