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Eur Radiol. 2002 Aug;12(8):2112-9. Epub 2002 Mar 19.

Primary synovial chondromatosis and synovial chondrosarcoma: a pictorial review.

Author information

1
MRI Centre, Royal Orthopaedic Hospital, Birmingham B31 2AP, UK.

Abstract

This article illustrates the imaging characteristics of primary synovial chondromatosis (PSC) using 20 cases referred to a tertiary orthopaedic oncology centre. Three quarters of patients presented with a large intra-articular soft tissue mass and a suspected clinical and radiological diagnosis of malignancy made in the referring centres. Radiographs demonstrated fine cartilaginous mineralisation in the soft tissue masses in 85% cases and bone erosions were shown on MR imaging in 80%. Malignant transformation to chondrosarcoma was proven in 2 cases with longstanding disease. There were no specific MR features to distinguish these cases with malignant change from PSC alone. Primary synovial chondromatosis should be considered in the diagnosis of the monarticular presentation of an intra-articular soft tissue mass, particularly in the presence of superficial bone erosions and signal voids due to the mineralisation.

PMID:
12136332
DOI:
10.1007/s00330-002-1318-1
[Indexed for MEDLINE]

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