DR P. MARAZZI / SCIENCE PHOTO LIBRARY DR P. MARAZZI / SCIENCE PHOTO LIBRARY
Pyogenic granuloma (large red swelling on gum) in a 77-year-old woman's mouth. This is a growth of the skin and mucous membranes. It is benign, but grows rapidly to a few centimetres in size. It is usually excised and then tested to eliminate the possibility of cancer.
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