Synovial chondromatosis affecting the temporomandibular joint

Authors

  • Phillip S. Rosen M.D., F.R.C.P. (C),

    1. Staff Physician, Mount Sinai Hospital. Associate Professor, University of Toronto
    2. From the Departments of Medicine, Pathology, Radiology, Otolaryngology, and the Rheumatic Disease Unit, Mount Sinai Hospital and University of Toronto, Toronto, Ontario, Canada.
    Search for more papers by this author
  • Kenneth P. H. Pritzker M.D., F.R.C.P. (C),

    Corresponding author
    1. Pathologist, Mount Sinai Hospital, Assistant Professor, University of Toronto
    2. From the Departments of Medicine, Pathology, Radiology, Otolaryngology, and the Rheumatic Disease Unit, Mount Sinai Hospital and University of Toronto, Toronto, Ontario, Canada.
    • Department of Pathology, Mount Sinai Hospital, 600 University Avenue, Toronto, Ontario, Canada M5G 1X5
    Search for more papers by this author
  • Joseph Greenbaum M.D., F.R.C.P. (C),

    1. Fellow in Rheumatology, Mount Sinai Hospital and University of Toronto
    2. From the Departments of Medicine, Pathology, Radiology, Otolaryngology, and the Rheumatic Disease Unit, Mount Sinai Hospital and University of Toronto, Toronto, Ontario, Canada.
    Search for more papers by this author
  • Richard C. Holgate M.D., F.R.C.P. (C),

    1. Staff Neuroradiologist, Mount Sinai Hospital, Lecturer, University of Toronto
    2. From the Departments of Medicine, Pathology, Radiology, Otolaryngology, and the Rheumatic Disease Unit, Mount Sinai Hospital and University of Toronto, Toronto, Ontario, Canada.
    Search for more papers by this author
  • Arnold M. Noyek M.D., F.R.C.P. (C)

    1. Staff Otolaryngologist. Mount Sinai Hospital, Assistant Professor, University of Toronto.
    2. From the Departments of Medicine, Pathology, Radiology, Otolaryngology, and the Rheumatic Disease Unit, Mount Sinai Hospital and University of Toronto, Toronto, Ontario, Canada.
    Search for more papers by this author

Abstract

A case of synovial chondromatosis affecting the temporomandibular joint is reported and the literature is reviewed. Chondromatosis occurs most frequently in this joint in middle-aged women, and it presents with pain and tenderness over the joint. Radiologically, the condition is detected by widening of the joint space with the variable presence of radiodense loose bodies. Pathologically, the loose bodies in the case presented were demonstrated to arise from cartilaginous metaplasia of the synovial lining. The stimulus for synovial chondrometaplasia at this site is unknown.

Ancillary