TY - JOUR T1 - An infiltrating rheumatoid nodule? JF - Annals of the Rheumatic Diseases JO - Ann Rheum Dis SP - 688 LP - 689 DO - 10.1136/ard.51.5.688 VL - 51 IS - 5 AU - A H Isdale AU - P S Helliwell Y1 - 1992/05/01 UR - http://ard.bmj.com/content/51/5/688.abstract N2 - The case is presented of a patient with mild rheumatoid arthritis who developed an enlarged painful tissue mass in the left lower leg. Although the history, clinical, and imaging appearances suggested that it was a soft tissue sarcoma, a biopsy specimen showed histological features consistent with either a rheumatoid nodule or subcutaneous granuloma annulare. ER -