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An HPV infection is caused by the human papillomavirus, a DNA virus from the papillomavirus family. [8] [9] Over 200 types have been described. [10] An individual can become infected with more than one type of HPV, [11] and the disease is only known to affect humans.
[3] [4] [5] Infection by most papillomavirus types, depending on the type, is either asymptomatic (e.g. most Beta-PVs) or causes small benign tumors, known as papillomas or warts (e.g. human papillomavirus 1, HPV6 or HPV11). Papillomas caused by some types, however, such as human papillomaviruses 16 and 18, carry a risk of becoming cancerous. [6]
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).
Laryngeal papillomatosis, also known as recurrent respiratory papillomatosis (RRP) or glottal papillomatosis, is a rare medical condition in which benign tumors form along the aerodigestive tract. [1] [2] There are two variants based on the age of onset: juvenile and adult laryngeal papillomatosis. [3]
Squamous cell papilloma of the mouth or throat is generally diagnosed in people between the ages of 30 and 50, [1] and is normally found on the inside of the cheek, on the tongue, or inside of lips. Oral papillomas are usually painless, and not treated unless they interfere with eating or are causing pain. [ 1 ]
Alphapapillomavirus is a genus of viruses in the family Papillomaviridae.Humans and monkeys serve as natural hosts. There are 14 species in this genus. [1] Diseases associated with this genus include warts, papillomas, and malignant tumours.
The infection first appears as a red and swollen area on the skin, followed by development of circular papilloma warts and keratinized horny warts. Although transmission between rabbits is high, the tumors themselves do not contain the infectious virus. 25% of Papilloma infections become malignant and form squamous cell carcinoma. Metastases ...
There are about 130 known types of human papillomaviruses. [9] HPV infects the squamous epithelium, usually of the skin or genitals, but each HPV type is typically only able to infect a few specific areas of the body. Many HPV types can produce a benign growth, often called a "wart" or "papilloma", in the area they infect. [10]