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An infiltrating rheumatoid nodule?
  1. A H Isdale,
  2. P S Helliwell
  1. Rheumatology and Rehabilitation Research Unit, Leeds, United Kingdom.


    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.

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