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Clinical Problem Solving: Radiology
March 1, 2008

Radiology Quiz Case 2: Diagnosis

Author Affiliations

Copyright 2008 American Medical Association. All Rights Reserved. Applicable FARS/DFARS Restrictions Apply to Government Use.2008

Arch Otolaryngol Head Neck Surg. 2008;134(3):331. doi:

The term PVNSwas introduced in 1941 by Jaffe et al1to describe the histologic characteristic features of the tenosynovial lesion, which included nodules, villi, and pigment. It is an uncommon disease, with an incidence of only 1.8 cases per million per year.2It is nearly always monoarticular. Most often, it involves large joints or extremities, with the knee being the most affected site. Occurrence in the temporomandibular joint is distinctly rare; the first case (to our knowledge) was reported by Lapayowker et al3in 1973.

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