DR P. MARAZZI / SCIENCE PHOTO LIBRARY DR P. MARAZZI / SCIENCE PHOTO LIBRARY
Solar keratosis treatment. Cryotherapy being used to treat a solar keratosis on woman's face. Solar keratoses are pre-cancerous skin growths caused by sun damage. It is important to remove the growths as they can develop into skin cancer. Cryotherapy uses liquid nitrogen (applied using a cryotherapy probe) to kill and freeze the wart.
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