Papilloma
Medical condition / From Wikipedia, the free encyclopedia
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A papilloma (plural papillomas or papillomata) (papillo- + -oma) is a benign epithelial tumor[1] growing exophytically (outwardly projecting) in nipple-like and often finger-like fronds. In this context, papilla refers to the projection created by the tumor, not a tumor on an already existing papilla (such as the nipple).
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When used without context, it frequently refers to infections (squamous cell papilloma) caused by human papillomavirus (HPV), such as warts. Human papillomavirus infection is a major cause of cervical cancer, vulvar cancer, vaginal cancer, penis cancer, anal cancer, and HPV-positive oropharyngeal cancers.[2][3][4][5][6] Most viral warts are caused by human papillomavirus infection (HPV),[7] of which there are nearly 200 distinct human papillomaviruses (HPVs),[4] and many HPV types are carcinogenic.[2][3] There are, however, a number of other conditions that cause papilloma, as well as many cases in which there is no known cause.