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Deposition of calcium pyrophosphate dihydrate crystals in a soft tissue chondroma.
  1. N A Athanasou,
  2. M Caughey,
  3. P Burge,
  4. C G Woods
  1. Department of Pathology, Nuffield Orthopaedic Centre, Headington, Oxford, UK.


    Calcium pyrophosphate dihydrate (CPPD) crystal deposits were found in an extraarticular chondroma of the soft parts overlying the distal phalanx of the right middle finger. The lesion appeared to arise from the flexor tenosynovium. The pathogenesis of soft tissue chondroma and the relation of cartilage metaplasia to the process of CPPD crystal deposition were investigated.

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