Basal cell carcinoma (BCC) is the most common type of skin cancer. It starts from basal cells, which are found in the deepest layer of the epidermis (the outer layer of the skin) and in hair follicles. Under the microscope, all basal cell carcinomas are made up of clusters of small, darkly stained cells called …
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A congenital nevus is a common, noncancerous (benign) skin growth made up of cells called melanocytes. Melanocytes are the cells in the skin that make melanin, the pigment that gives skin its color. These growths are called “congenital” because they are usually present at birth or appear within the first year of life. Another name …
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Lentigo maligna is a type of melanoma in situ, a very early form of skin cancer that has not yet spread beyond the top layer of the skin (the epidermis). It develops in skin that has had years of sun exposure, such as the face, neck, and arms, and it usually affects older adults. Lentigo …
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Melanoma is a type of cancer that starts in cells called melanocytes. These cells are found in the skin and produce melanin, a pigment that gives your skin its color. Melanocytes are also found in mucosal tissues, such as the lining of the mouth, nose, and rectum. Melanoma occurs when these cells grow out of …
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