Welcome to IANS

We are the world's first professional society devoted to the prevention and treatment of AIN (anal intraepithelial neoplasia) and anal cancer.

Our mission is to provide a forum for individuals with a broad spectrum of backgrounds, viewpoints and geographic origin, an exchange of ideas and dissemination of knowledge regarding the pathogenesis, diagnosis, treatment and prevention of anal neoplasia. 


  • 2024 WebRounds Dates TBD

IANS Europe Corner

New!European Task Force Monthly Meetings 

Join the committee the first Thursday of the month starting in October at 17:00 CET

Next Meeting December 7th

Join the Task Force Meeting

Watch Recording

Upcoming Courses


  • HRA Course opens March 2024

December Patient Seminar

IANS Podcast

Career Center

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The International Anal Neoplasia Society

P.O. Box 1543
Leesburg, Virginia 20177


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