Fast Five Quiz: Conditions Associated With Psoriatic Arthritis

Herbert S. Diamond, MD; Eric M. Ruderman, MD


December 22, 2021

Data suggest that the incidence rates of overall cancer and cancer subtypes, including lymphoma and nonmelanoma skin cancer, are similar in patients with PsA and those with rheumatoid arthritis, even after adjustment for numerous potential confounders, including age, race, sex, disease activity, disease duration, year of enrollment, and medication use. While a recent study concluded that patients with psoriasis appear to have a slightly increased risk of cancer, particularly keratinocyte cancer and lymphomas, patients with PsA did not face an overall increased risk of cancer.

Data are conflicting regarding an increased risk for melanoma and nonmelanoma skin cancers in patients.

Studies have not shown an increased risk for solid malignant tumors in patients with PsA.

Learn more about the epidemiology of PsA.


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