DR P. MARAZZI / SCIENCE PHOTO LIBRARY DR P. MARAZZI / SCIENCE PHOTO LIBRARY
Tongue wart. Close-up of a papilloma (wart, centre) on the tongue of a 49-year-old female patient. This is a growth caused by the human papilloma virus (HPV). There are over thirty types of HPV. Some warts spontaneously disappear, while others may need to be surgically removed.
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