Final answer:
Malignant melanoma originates from melanocytes, which are skin pigment cells found in the stratum basale of the epidermis. These cells produce melanin and are responsible for skin color. Melanoma is the deadliest form of skin cancer due to its metastatic potential.
Step-by-step explanation:
Malignant melanoma arises from melanocytes, which are the skin pigment cells located in the stratum basale of the epidermis. These cells produce melanin, the pigment that gives skin its color, and they protect underlying skin layers from the damaging effects of ultraviolet (UV) radiation. When these melanocytes become cancerous, they can lead to the development of melanoma, which is the most deadly form of skin cancer due to its high potential to metastasize (spread to other parts of the body). Treatment for melanoma usually involves surgical excision and may also include immunotherapy. It's important to note that melanomas can be difficult to detect before they have spread, due to their appearance as asymmetrical patches that often resemble moles.