Open Access Highly Accessed Open Badges Case report

Tenosynovial giant cell tumors as accidental findings after episodes of distortion of the ankle: two case reports

Christian Illian1*, Horst-Rainer Kortmann1, Hans Otto Künstler2, Ludger W Poll1 and Markus Schofer3

Author Affiliations

1 Berufsgenossenschaftliche Unfallklinik Duisburg GmbH, Grossenbaumer Allee 250, 47249 Duisburg, Germany

2 Institut für Pathologie, Evangelisches Krankenhaus Bethesda, Duisburg, Heerstr. 219 47053 Duisburg, Germany

3 Universitätsklinikum Marburg, Baldingerstrasse, 35043 Marburg, Germany

For all author emails, please log on.

Journal of Medical Case Reports 2009, 3:9331  doi:10.1186/1752-1947-3-9331

Published: 15 December 2009



Tenosynovial giant cell tumors are benign tumors of uncertain pathogenesis. They occur in the joints, tendons and synovial bursas. Due to a high recurrence rate of up to 50%, some authors call a giant cell tumor a semimalignant tumor. To date, less than 10 cases of tenosynovial giant cell tumor of the ankle have been published in the international medical literature.

Case presentation

In this case report, we present two patients with localized tumors that were detected accidentally after the occurrence of ankle sprains with persisting pain in the joint. The tumors were resected by open marginal surgery and regular follow-up examinations were carried out.


We present an unusual occurrence of a tumor along with a possible follow-up strategy, which has not been previously discussed in the international literature.