title: Tenosynovial, diffuse type giant cell tumor of the temporomandibular joint, diagnosis and management of a rare tumor.
abstract: The purpose of this paper was to describe a rare unusual case of primary mandibular condylar tenosynovial giant cell tumor of diffuse type with predominantly intraosseous growth and its management by resection and functional reconstruction with a vascularized costochondral graft. Clinical presentation was swelling in the right condylar area and limited mouth opening with radiological evidence of central bone destruction and magnetic resonance imaging showed central hemosiderin deposition. Fine needle aspiration did not lead to a diagnosis and an open biopsy had to be performed. Management consisted of tumor resection and reconstruction with a free vascularized costochondral graft. Tenosynovial diffuse type giant cell tumor of the temporomandibular joint is very rare. Complete resection leads to a low recurrence rate and reconstruction with a costochondral free vascularized flap leads to an excellent functional outcome.
authors.affiliation: Department of Craniomaxillofacial and Oral Surgery, University Hospital Zurich, Frauenklinikstrasse 24, 8091 Zurich, Switzerland.
authors.forename: Marius
authors.initials: M
authors.lastname: Bredell
authors.affiliation: MRI Institute, Bahnhofplatz 3, 8001 Zurich, Switzerland.
authors.forename: Bernhard
authors.initials: B
authors.lastname: Schucknecht
authors.affiliation: Institute for Clinical Pathology, University Hospital Zurich, Schmelzbergstrasse 12, 8091 Zurich, Switzerland.
authors.forename: Baete
authors.initials: B
authors.lastname: Bode-Lesniewska
keywords: Costochondral graft; Diffuse type giant cell tumor; Free vascularized graft; Reconstruction; Temporomandibular joint; Tenosynovial