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  • Age: 0
  • Sex: female
  • Medical history:
    • Left ankle and feet pain for many years (since early childhood)
    • Otherwise no pain.
    • CRP: normal
  • Clinical findings:
    • swelling around the medial malleulus. Otherwise normal

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1: Ankle pain since early childhood
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  • Over the years increasing pain and swelling. Decreased range of motion.Over the years increasing pain and swelling. Decreased range of motion.later
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Synovial chondromatosis

  • Young female (now 24 years of age) with longstanding history of ankle pain.
  • There are no findings suggestive of inflammatory disease (no synovitis, osteitis, erosions, enthesitis).
  • There is a synovial mass enveloping the flexor tendons with small fragments that is compatible with a synovial originating benign tumor. The small fragments probably represent synovial metaplasia into cartilage or bone- giving the tumor its name: synovial chondromatosis or osteochondromatosis.
  • Surgical treatment is usually indicated with low incidence of recurrence.
  • Differential diagnosis: pigmented villonodular synovitis (aka: giant cell tumor of tendon sheath), another synovial originating benign tumor that may be locally aggressive