human papillomavirus

High grade squamous intraepithelial lesion (HSIL)

High grade squamous intraepithelial lesion (HSIL) is a precancerous disease caused by human papillomavirus (HPV). It is composed of abnormal squamous cells that have been infected and transformed by the virus. There are many types of HPV but most cases of HSIL are caused by the high-risk types 16 and 18. HSIL can involve the …
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Verruca vulgaris

What is verruca vulgaris? Verruca vulgaris is a non-cancerous growth caused by infection with human papillomavirus (HPV). The growth is made up of abnormal squamous cells and it is typically found on the skin although it can also be found on the lips or inside the mouth. People who are immune-suppressed are at increased risk …
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High grade squamous intraepithelial lesion of the anus and anal canal

High grade squamous intraepithelial lesion (HSIL) is a precancerous disease caused by human papillomavirus (HPV). It is composed of abnormal squamous cells that have been infected and transformed by the virus. Squamous cells are found in a thin layer of tissue called the epithelium which covers the inside surface of the anus and anal canal. …
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Non-keratinizing squamous cell carcinoma of the oropharynx

What is non-keratinizing squamous cell carcinoma of the oropharynx? Non-keratinizing squamous cell carcinoma (NKSCC) is a type of oropharyngeal cancer. The oropharynx is an area of the throat that includes the tonsils, base of the tongue, uvula, and soft palate. This type of cancer quickly spreads to lymph nodes especially those in the neck. For …
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Squamous cell carcinoma of the anal canal

What is squamous cell carcinoma of the anal canal? Squamous cell carcinoma (SCC) is a type of anal cancer. The anal canal is located at the end of the digestive tract between the rectum and the anus. Squamous cell carcinoma is the most common type of cancer in the anal canal. About this article This …
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Human papillomavirus (HPV)

What is human papillomavirus? Human papillomavirus (HPV) is a very common sexually transmitted virus. There are more than 100 types of HPV and some types are more likely than others to cause cancer. The virus infects squamous cells which are normally found in the skin, mouth and throat, cervix, penis, and anal canal. How is …
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Squamous cell carcinoma of the cervix

Squamous cell carcinoma (SCC), also called invasive squamous cell carcinoma, is the most common type of cervical cancer. The tumour starts from squamous cells normally found in the epithelium on the outside surface of the cervix. SCC of the cervix can be keratinizing (KSCC), non-keratinizing (NKSCC), or basaloid. Keratinizing means that the tumour cells are …
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High grade squamous intraepithelial lesion of the vagina

High grade squamous intraepithelial lesion (HSIL) is a precancerous disease caused by human papillomavirus (HPV). It is composed of abnormal squamous cells that have been infected and transformed by the virus. Squamous cells are found in a thin layer of tissue called the epithelium which covers the inside surface of the vagina. There are many …
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High grade squamous intraepithelial lesion of the vulva

High grade squamous intraepithelial lesion (HSIL) is a precancerous disease caused by human papillomavirus (HPV). It is composed of abnormal squamous cells that have been infected and transformed by the virus. Squamous cells are found in a thin layer of tissue called the epithelium which covers the surface of the vulva. There are many types …
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Low grade squamous intraepithelial lesion of the vagina

Low grade squamous intraepithelial lesion (LSIL) in the vagina is an abnormal growth caused by infection with human papillomavirus (HPV). The abnormal growth seen in LSIL is an example of dysplasia. In addition to the vagina, LSIL can also affect the anal canal, vulva, and cervix. In men, LSIL can affect the penis and scrotum. …
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