J Korean Soc Radiol.  2010 Jan;62(1):73-76. 10.3348/jksr.2010.62.1.73.

Synovial Chondrosarcoma in the Hand and Wrist: A Case Report

• An YY
• Kim JY
• Kang SJ
• Kang YK
• Baik JH

• KMID: 2208998
• DOI: http://doi.org/10.3348/jksr.2010.62.1.73

Abstract

Synovial chondrosarcoma is extremely rare and arises de novo or from malignant transformation of synovial chondromatosis. It commonly involves large joints, such as the knee or hip. Here, we present an unusual case of synovial chondrosarcoma from synovial chondromatosis in the hand and wrist, clearly demonstrating the characteristic findings on plain radiograph and MR imaging.

MeSH Terms

Chondromatosis, Synovial
Chondrosarcoma
Hand
Hip
Joints
Knee
Magnetic Resonance Imaging
Wrist
Wrist Joint

Figure

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  Fig. 1 Synovial chondrosarcoma in an 82-year-old woman. A. Plain radiograph shows multiple, popcorn-like with ring- and arc-shaped calcifications (thick arrows) in the wrist and proximal hand. Marked soft tissue swelling (thin double arrows) is seen in this area. B. T1-weighted axial image shows a large lobulated, hypointense mass (white arrows) from the distal metaphysis of the radius and ulna to the metaphysis of the metacarpal bones. C. This mass is hyperintense on fat suppressed T2-weighted axial image (white arrows). The medullary canal is intact. Note multiple dark signal intensity nodules within the mass (black arrowheads), suggesting chondroid calcifications on plain radiograph. D. Contrast enhanced T1-weighted image shows nodular and septal enhancement in this mass (white arrows). E. Photomicrograph (Hematoxylin-eosin stain: original magnification, ×100) depicts a lobular cartilage mass with infiltration into surrounding soft tissue and abutment to the adjacent bone cortex. Note the malignant tumor cells nests (black thin arrows). This malignant tumor cell nest focally invades into the cortex of adjacent bone (black arrowheads).

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