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Genital/Anogenital Warts

Michael Melia, M.D.
Genital/Anogenital Warts is a topic covered in the Johns Hopkins ABX Guide.

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  • The most common viral sexually transmitted infection.
  • All anogenital warts are caused by human papillomavirus (HPV) infection.
  • Most (>90%) anogenital warts are benign, caused by HPV subtypes 6 and 11, which are "low risk" (for malignancy) HPV subtypes.
    • HPV subtypes 16 and 18, the most common "high risk" subtypes, cause ~70% of cervical cancers but usually do not cause warts.
    • These other "intermediate risk" HPV subtypes, including 16, 18, 31, 33, and 35, are associated with high grade squamous intrathelial neoplasia (HG-SIL) and are occasionally found in warts, particularly in persons with concurrent HIV infection.
  • For additional non-genital wart information, see HPV module.

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Last updated: October 28, 2017


Melia, Michael. "Genital/Anogenital Warts." Johns Hopkins ABX Guide, The Johns Hopkins University, 2017. Pediatrics Central, peds.unboundmedicine.com/pedscentral/view/Johns_Hopkins_ABX_Guide/540244/all/Genital_Anogenital_Warts.
Melia M. Genital/Anogenital Warts. Johns Hopkins ABX Guide. The Johns Hopkins University; 2017. https://peds.unboundmedicine.com/pedscentral/view/Johns_Hopkins_ABX_Guide/540244/all/Genital_Anogenital_Warts. Accessed April 23, 2019.
Melia, M. (2017). Genital/Anogenital Warts. In Johns Hopkins ABX Guide. Available from https://peds.unboundmedicine.com/pedscentral/view/Johns_Hopkins_ABX_Guide/540244/all/Genital_Anogenital_Warts
Melia M. Genital/Anogenital Warts [Internet]. In: Johns Hopkins ABX Guide. The Johns Hopkins University; 2017. [cited 2019 April 23]. Available from: https://peds.unboundmedicine.com/pedscentral/view/Johns_Hopkins_ABX_Guide/540244/all/Genital_Anogenital_Warts.
* Article titles in AMA citation format should be in sentence-case
TY - ELEC T1 - Genital/Anogenital Warts ID - 540244 A1 - Melia,Michael,M.D. Y1 - 2017/10/28/ BT - Johns Hopkins ABX Guide UR - https://peds.unboundmedicine.com/pedscentral/view/Johns_Hopkins_ABX_Guide/540244/all/Genital_Anogenital_Warts PB - The Johns Hopkins University DB - Pediatrics Central DP - Unbound Medicine ER -