Skin lesion. Light micrograph of a section through a seborrheic wart. Also known as keratoses,these raised skin lesions develop in the elderly. They are not true warts,but are caused by a proliferation of basal cells in the skin,and are often pigmented. Melanocyte cells that contain the pigment melanin are seen (brown). The lesions are often raised on a central stalk,and therefore are subjected to trauma,which may cause them to bleed and become irritated. Although they are benign many people have seborrheic ketoses removed for cosmetic reasons | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / CNRI |
Taille de l’image : | 5197 px × 3410 px |
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