RT Journal Article SR Electronic T1 Perforating Rheumatoid Nodule Mimicking Malignant Soft-tissue Mass of the Forearm JF The Journal of Rheumatology JO J Rheumatol FD The Journal of Rheumatology SP jrheum.201290 DO 10.3899/jrheum.201290 A1 Paul Ornetti A1 David Guillier A1 Geraldine Jeudy YR 2021 UL http://www.jrheum.org/content/early/2021/05/27/jrheum.201290.abstract AB Rheumatoid nodule1, one of the most characteristic manifestations of rheumatoid arthritis (RA), occurs in approximately 30% of patients, is generally associated with positive rheumatoid factor, smoking, and high disease activity2, and occurs in some patients with specific genotypes receiving methotrexate (MTX)3. An 83-year-old woman with a history of anticitrullinated protein antibody–positive RA treated by oral MTX, as well as gout, was hospitalized for a growing tumor of her right forearm.