DR P. MARAZZI / SCIENCE PHOTO LIBRARY DR P. MARAZZI / SCIENCE PHOTO LIBRARY
Lichenoid keratosis. Close-up of the back of the hand of a 61-year-old man with lichenoid keratosis. This is a benign (non-cancerous) solitary lesion that develops from an existing lesion such as a lentigo (pigmented skin spot) or a seborrhoeic wart (a harmless skin growth).
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