Anal cancer incidence among women with a history of vulvar cancer by histology, age, and time since diagnosis
Women with a history of vulvar cancer face a high risk of anal cancer; however, incidence according to histology, age-at, and time since vulvar cancer diagnosis remains unexplored. Using data from SEER-8 and SEER-17 registries, we identified 21,230 women with vulvar cancer, with 154,825 person-years follow-up from 1975 to 2021. We observed 95 anal cancer cases, resulting in an incidence of 61.4 per 100,000 person-years (95% CI, 49.6-75.0). Incidence was higher among women with vulvar squamous cell carcinoma (SCC) (78.7; 95% CI, 62.9-97.1) than vulvar non-SCC (19.8; 95% CI, 9.0-37.6). The highest incidence (>100 per 100,000) was observed in women <45 years old with vulvar SCC and those >10 years post-diagnosis. These findings could inform anal cancer screening guidelines, as women with vulvar cancer, particularly those diagnosed with SCC, may substantially benefit from heightened surveillance or targeted screening.
Authors
- Haluk Damgacioglu (ORCID: https://orcid.org/0000-0003-4361-4515)
- Ashish A. Deshmukh (ORCID: https://orcid.org/0000-0001-8936-8108)
- Keith Magnus Sigel (ORCID: https://orcid.org/0000-0002-4051-4861)
- Brian Orr (ORCID: https://orcid.org/0000-0003-0158-1575)
- Elizabeth Y. Chiao (ORCID: https://orcid.org/0000-0001-5752-2916)
- Gweneth B. Lazenby (ORCID: https://orcid.org/0000-0002-5233-442X)
- Kalyani Sonawane (ORCID: https://orcid.org/0000-0001-5501-3034)
- Gary M. Clifford (ORCID: https://orcid.org/0000-0001-7534-333X)
- Jane R. Montealegre
- Joel M. Palefsky (ORCID: https://orcid.org/0000-0002-5097-3818)
Institutions
- The University of Texas MD Anderson Cancer Center (US)
- Medical University of South Carolina (US)
- University of California, San Francisco (US)
- MUSC Hollings Cancer Center (US)
- Centre international de recherche sur le cancer (FR)
- University of San Francisco (US)
- Icahn School of Medicine at Mount Sinai (US)
Publication Details
- Journal
- The Oncologist
- Published
- 2025-09-24
- DOI
- https://doi.org/10.1093/oncolo/oyaf307
- Primary Topic
- Colorectal and Anal Carcinomas
- Type
- article
- Field-Weighted Citation Impact
- 0.00
Funders
- World Health Organization
- National Cancer Institute