Final answer:
A lesion that forms following the healing of an injury is called a scar, which is collagen-rich skin that differs from the original skin structure.
Step-by-step explanation:
The lesion found following the healing of an injury is called a scar. A scar is collagen-rich skin that forms after the wound healing process, and it differs from the normal skin. When the skin is damaged beyond the superficial epidermis and needs to repair itself, fibroblasts generate scar tissue in the form of collagen. However, this does not lead to the regeneration of the original cellular structure of the skin, resulting in a tissue that is fibrous in nature and lacks accessory structures like hair follicles, sweat glands, or sebaceous glands. On some occasions, an overproduction of scar tissue can lead to the formation of a hypertrophic scar known as a keloid.