DR P. MARAZZI / SCIENCE PHOTO LIBRARY DR P. MARAZZI / SCIENCE PHOTO LIBRARY
Lip granuloma. Close-up of a pyogenic (pus- forming) granuloma (brown spot) on the lip of a 75-year-old man. A granuloma is a mass of small blood vessels and connective tissue which forms due to chronic inflammation, after infection or due to the presence of a foreign body. A pyogenic granuloma is usually surgically removed.
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