What are the symptoms of lentigo maligna melanoma?

Symptoms of lentigo maligna melanoma are usually large, flat, irregularly-shaped tan patches on the skin. These growths usually form on sun-exposed skin on the nose, cheeks, ears, and elsewhere on the head and neck. In lentigo maligna melanoma, the lesions begin in the epidermis, or the topmost layer of skin, but may spread to affect the dermis, or middle layer of skin. Since symptoms vary from person to person, it's important to see a doctor if you think you may have lentigo maligna melanoma.