Any darkly pigmented lesion is suspicious. Melanoma is suspected when when any of the ABCDE. signs are present. These are Asymmetry, Border irregularity, Color variation, Diameter greater than 6 mm, and Elevation.
Melanomas are classified by clinical appearance.
Superficial spreading melanoma is the most common pattern. These lesions remain flat and grow bilateral extension. The color varies and the border is irregular.
Nodular melanoma grows vertically and is often more uniform in color. This is a more aggressive tumor.
Lentigo maligna melanoma is often found on the face. They appear in pigmented photo damaged skin. Darkening of pigmentation and the development of an irregular border and pigmented lesions of the face is suspicious for lentigo maligna melanoma.
Acral lentiginous melanoma are melanomas that occur on the hands, feet mouth, or genitals. There also found about the fingernail. The color varies and they may have the appearance of bleeding about the nail. Patient’s with lesions on the soles may have advanced disease because they were unaware of the new growth.