Risk of breast cancer before and after rheumatoid arthritis, and the impact of hormonal factors.
Hjalmar WadströmAndreas PetterssonKarin E SmedbyJohan AsklingPublished in: Annals of the rheumatic diseases (2020)
The decreased occurrence of breast cancer in patients with RA is present already before RA diagnosis; these reduced risks are not readily explained by hormonal risk factors. Adjuvant antihormonal therapy for breast cancer does not seem to increase RA risk.