Synovial chondroma of the ankle in a young child after recent trauma: CT and MR features


      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.


      To read this article in full you will need to make a payment

      Purchase one-time access:

      Academic & Personal: 24 hour online accessCorporate R&D Professionals: 24 hour online access
      One-time access price info
      • For academic or personal research use, select 'Academic and Personal'
      • For corporate R&D use, select 'Corporate R&D Professionals'


      Subscribe to Clinical Imaging
      Already a print subscriber? Claim online access
      Already an online subscriber? Sign in
      Institutional Access: Sign in to ScienceDirect


        • Milgram JW
        Synovial osteochondromatosis.
        J Bone Jt Surg, Am Vol. 1977; 59: 792-801
        • Rogachefsky RA
        • Zlatkin MB
        • Greene TL
        Synovial chondromatosis of the distal radioulnar joint: a case report.
        J Hand Surg. 1997; 22A: 1093-1097
        • Kramer J
        • Recht M
        • Deely DM
        • Schweitzer M
        • Pathria MN
        • Gentiti A
        • Greenway G
        • Resnick D
        MR appearance of idiopathic synovial osteochondromatosis.
        J Comput Assisted Tomogr. 1993; 17: 772-776
        • Reichel PF
        Chondromatose der Kniegelenkkapsel.
        Arch Klin Chir. 1900; 61: 717-724
        • Davis RI
        • Hamilton A
        Primary synovial chondromatosis: a clinicopathologic review and assessment of malignant potential.
        Hum Pathol. 1998; 29: 683-688
        • Wuisman PIJM
        • Noorda RJP
        • Jutte PC
        Chondrosarcoma secondary to synovial chondromatosis report of two cases and a review of the literature.
        Arch Orthop Trauma Surg. 1997; 116: 307-311
        • Bertoni F
        • Unni KK
        • Beaboyt JW
        • Sim FH
        Chondrosarcoma of the synovium.
        Cancer. 1991; 67: 155-162
        • Shanley DJ
        • Evans EM
        • Buckner AB
        • Delaplain CB
        Synovial osteochondromatosis demonstrated on bone scan correlation with CT and MRI.
        Clin Nucl Med. 1992; 17: 338-339
        • Edeiken J
        • Edeiken BS
        • Ayala AG
        • Raymond AK
        • Murray JA
        • Guo SQ
        Giant solitary synovial chondromatosis.
        Skeletal Radiol. 1994; 23: 23-29
        • Wong L
        • Dellon AL
        Soft tissue chondroma presenting as a painful finger: diagnosis by magnetic resonance imaging.
        Ann Plast Surg. 1992; 28: 304-306
        • Llauger J
        • Monill JM
        • Palmer J
        • Clotet M
        Synovial hemangioma of the knee: MRI findings in two cases.
        Skeletal Radiol. 1995; 24: 579-581
        • Smith JH
        • Pugh DG
        Roentgenographic aspects of articular pigmented villonodular synovitis.
        Am J Roentgenol. 1962; 87: 1146-1156