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X\u2010ray diffraction analyses demonstrated calcium pyrophosphate dihydrate patterns in a subcutaneous \u201ctophus\u201ds and in a specimen of the tendon. On histologic examination, there was a bursitis with positive birefringent crystals on the bursa's inner surface; histologic images of \u201cchondrocalcinosis's's were observed in and around the tendon. It is concluded that bursitis may be part of the extraarticular manifestations of calcium pyrophosphate dihydrate crystal deposition disease.<\/jats:p>","DOI":"10.1002\/art.1780250812","type":"journal-article","created":{"date-parts":[[2007,2,14]],"date-time":"2007-02-14T19:58:39Z","timestamp":1171483119000},"page":"989-996","source":"Crossref","is-referenced-by-count":50,"title":["Olecranon bursitis related to calcium pyrophosphate dihydrate crystal deposition disease. 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