Human papillomavirus (HPV)

A DNA virus that may cause cutaneous warts, genital warts, or the clinical condition recurrent respiratory papillomatosis (RRP) in susceptible individuals. Human papillomavirus (HPV) may occur in as many as 150 or more subtypes. The most common subtypes seen in patients with RRP are HPV 6 and 11. Other less common subtypes that can induce papillomas or other growths within the larynx include HPV 16, 18, 31, 44, 45, 55, 69, 84 & 11, 33 & 45 and some of these subtypes are associated with a higher risk of cancer formation. See the photo series below, displaying all of the subtypes mentioned above.