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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.

Original publication

DOI

10.1136/ard.50.12.950

Type

Journal article

Journal

Ann rheum dis

Publication Date

12/1991

Volume

50

Pages

950 - 952

Keywords

Aged, Calcium Pyrophosphate, Chondroma, Crystallization, Female, Fingers, Humans, Microscopy, Polarization, Radiography, Soft Tissue Neoplasms