Final answer:
Nodular melanoma commonly manifests on the trunk in men and legs in women, while acral lentiginous melanoma appears primarily on the palms, soles, or under nails and is the most common type in people of color. Melanoma is characterized by malignant melanocytes and requires prompt treatment, including surgical excision and immunotherapy. Regular skin self-examinations are crucial for the early detection of melanoma changes.
Step-by-step explanation:
Nodular melanoma is an aggressive form of melanoma that typically presents as a firm, raised lesion on the skin surface and can be black, blue-black, or sometimes reddish or flesh-colored. It is most commonly found on the trunk in men and the legs in women but can occur anywhere on the body. Acral lentiginous melanoma, on the other hand, is less common and appears primarily on the palms, soles, or under the nails (subungual melanoma). It is the most common type of melanoma diagnosed in people of color.
Melanoma, the rarest but most deadly type of skin cancer, is characterized by the uncontrolled growth of melanocytes. Treatment usually comprises surgical excision and immunotherapy. Early detection is critical as melanoma can metastasize, making it more challenging to treat successfully.
It is crucial to be vigilant for changes in skin lesions and conduct regular self-examinations, looking for the ABCDEs of melanoma: Asymmetry, Borders, Color, Diameter, and Evolving characteristics. Any suspicious changes should be reported to a doctor without delay.