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Synovial chondroma of the ankle in a young child after recent trauma: CT and MR features
C J Hsueh1, G S Huang, C J Juan
1Department of Radiology, Tri-Service General Hospital, National Defense Medical Center 325 Sec. 2, Neihu 114, Cheng-Kung Road, Taipei, Taiwan, ROC.
Abstract:
We report a case of synovial chondroma of the left ankle in an 11-year-old boy presenting with soft tissue swelling after recent trauma. The noncalcified or nonossified intraarticular chondroma arising from metaplastic synovium has characteristic imaging appearance on computed tomography (CT) and magnetic resonance imaging (MRI). A lobulated mass of fluid-like density and signal intensity along with internal septa are characteristic features on CT and MRI. The knowledge of CT and MRI features of noncalcified or nonossified synovial chondroma is important to distinguish from the simple or complicated effusion, hemarthrosis, or other synovial process.
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01:10Ankle Joint
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The mesenchymal stem cells differentiate into chondrocytes that form the hyaline cartilage, and later the cartilaginous model of the bone. This model further transforms into a bone. This process is known as endochondral ossification.
During development, the limbs...