 EditorialThe relationship between cancer and rheumatoid arthritis: still a large research agendaThorvardur Love and Daniel H Solomon  Division of Rheumatology, Immunology, and Allergy, Brigham and Women's Hospital, Harvard Medical School, Francis Street, Boston, MA 02115, USA  author email corresponding author email
Arthritis Research & Therapy 2008,
10:109doi:10.1186/ar2417 See related research by Suissa et al., http://arthritis-research.com/content/10/2/R45 Abstract
The association between rheumatoid arthritis (RA) and malignancies has received increased attention in recent years. Reports suggesting that tumor necrosis factor blockers might elevate the risk of malignancy in RA patients have prompted researchers to look at the incidence of malignancies in all RA patients. In a recent issue of Arthritis Research & Therapy, Smitten and colleagues suggest that previous reports of a standardized incidence ratio close to one for malignancies in RA may reflect an increased risk for some site-specific malignancies and a reduced risk for others. Here we discuss these findings and suggest what issues could be addressed in future studies. | 
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