Synovial chondromatosis with malignant degeneration to chondrosarcoma. Report of a case.

Synovial Chondromatosis in a Child's Thumb: A Case Report and Review of the Literature

“…As with other case reports on malignant transformation, all of these cases were in large joints [3,5,17,21,24]. To our knowledge, no cases of malignant transformation have been seen in the finger joints.…”

Extremely rare synovial chondrosarcoma arising from the elbow joint: case report and review of the literature

“…2 To our knowledge, only 31 patients with a malignant transformation of synovial chondromatosis have been reported (Table I). [1][2][3][4][5][6][7][8][9][10]12,[15][16][17]19,20 De novo primary synovial chondrosarcoma with no signs of pre-existing or concurrent synovial chondromatosis is extremely rare. Only 4 well-documented case reports of primary chondrosarcoma of the synovium have been published.…”

Secondary synovial chondromatosis in a bursa overlying an osteochondroma mimicking a peripheral chondrosarcoma—a case report

“…In the secondary SC, the loose bodies are within the joint and have the potential for slow growth by synovial metaplasia following proliferation of surrounding connective tissue (Milgram 1977, Villacin et al 1979, Saotome et al 1999. Exceptional cases with a transformation from SC to chondrosarcoma have been described (Kaiser et al 1980, Perry et al 1988, Bertoni et al 1991, Kenan et al 1993, Hermann et al 1997, Wuisman et al 1997, Wittkop et al 2002, Ko et al 2004.…”