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Case report 590: Diffuse pigmented villonodular synovitis with a cartilaginous component.

G Pignatti1, G Mignani, P Bacchini

  • 11st Department of Orthopaedic Surgery, Rizzoli Institute, University of Bologna, Italy.

Skeletal Radiology
|January 1, 1990
PubMed
Summary

This case study details a rare elbow mass in a 54-year-old, identified as pigmented villonodular synovitis (PVNS) with cartilaginous elements. The findings suggest an intermediate form of PVNS linked with synovial chondromatosis.

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Area of Science:

  • Orthopedic Surgery
  • Radiology
  • Pathology

Background:

  • Pigmented villonodular synovitis (PVNS) is a rare, benign neoplastic proliferation of the synovium.
  • Elbow involvement by PVNS is uncommon, presenting diagnostic challenges.

Observation:

  • A 54-year-old patient presented with distal humerus osteolysis and a soft tissue mass.
  • Imaging studies, including radionuclide scintigraphy and CT, precisely characterized the mass.
  • Surgical intervention was performed for diagnosis and treatment.

Findings:

  • Histological examination revealed a unique case of elbow PVNS with diffuse cartilaginous components.
  • The tumor demonstrated significant erosion of the distal humerus.
  • Pathological features suggested an intermediate form of PVNS associated with synovial chondromatosis.

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Implications:

  • This case expands the understanding of PVNS presentation and its association with synovial chondromatosis.
  • Highlights the importance of advanced imaging in diagnosing complex joint masses.
  • Suggests a potential overlap between PVNS and synovial chondromatosis, requiring careful pathological evaluation.