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.J Clin Med Res. 2015;7(4):262-266doi: http://dx.doi.org/10.14740/jocmr1872w
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机译：本文的目的是描述一种罕见的罕见病例，该病例为弥漫型原发性下颌con突肌腱鞘巨细胞瘤，以骨内生长为主，并通过切除和功能性血管软骨移植进行治疗。临床表现为右con突区肿胀，张口受限，放射学证据显示中央骨破坏，磁共振成像显示中央铁血黄素沉积。细针穿刺未导致诊断，必须进行开放式活检。处理包括肿瘤切除和免费的血管化肋软骨移植。颞下颌关节的腱鞘扩散型巨细胞瘤非常罕见。完全切除会导致较低的复发率，而使用无软骨线的血管化皮瓣进行重建会导致出色的功能预后。JClin Med Res。 2015; 7（4）：262-266doi：http://dx.doi.org/10.14740/jocmr1872w
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