Tophaceous pseudogout (tumoral calcium pyrophosphate dihydrate crystal deposition disease).

  title={Tophaceous pseudogout (tumoral calcium pyrophosphate dihydrate crystal deposition disease).},
  author={Tsuyoshi Ishida and Howard D. Dorfman and Peter G. Bullough},
  journal={Human pathology},
  volume={26 6},
Most cases of calcium deposition seen radiologically in soft tissues are caused by calcium hydroxyapatite and occur either as a complication of trauma with associated necrosis (eg, fat necrosis), generalized connective tissue diseases (eg, scleroderma), metabolic disturbances (eg, hyperparathyroidism, familial hyperphosphatemia), sarcoidosis, myeloma, or metastases. Hydroxyapatite deposits are seen at many soft tissue sites, including joint capsules, ligaments, blood vessels, dermis, etc. On… CONTINUE READING


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