Isolated intra-articular pseudorheumatoid nodule of the knee

Mickey Plymale, Andrew Lovy, Esperanza Villanueva-Siles, David S. Geller

Research output: Contribution to journalArticlepeer-review

3 Scopus citations


The authors describe a case of an isolated intra-articular pseudorheumatoid nodule of the knee in an 18-year-old male patient without a diagnosis of rheumatoid arthritis. The patient initially presented with a 3 year history of anterior knee pain and was found to have a 2.8 × 2.1 cm lobulated soft-tissue mass. Histologic findings showed fibrinoid necrosis and chronic inflammatory changes that were consistent with those of a pseudorheumatoid or rheumatoid nodule, and surgical excision of the nodule was curative. A review of the literature revealed no prior cases of an intra-articular pseudorheumatoid nodule or rheumatoid nodule in a patient without clinical or serologic evidence of rheumatoid arthritis.

Original languageEnglish (US)
Pages (from-to)463-466
Number of pages4
JournalSkeletal Radiology
Issue number4
StatePublished - Apr 2011


  • Intra-articular mass
  • Knee mass
  • Pseudorheumatoid nodule
  • Rheumatoid arthritis
  • Rheumatoid nodule

ASJC Scopus subject areas

  • Radiology Nuclear Medicine and imaging


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