DR P. MARAZZI / SCIENCE PHOTO LIBRARY DR P. MARAZZI / SCIENCE PHOTO LIBRARY
Keratoacanthoma. Close-up of a keratoacanthoma on the skin of 51-year-old female patient. Keratoacanthoma (KA) is a relatively common low-grade skin tumour that is thought to originate from hair follicles. They are often benign (non-cancerous) but due to their tendency to become malignant (cancerous) prompt treatment is required.
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