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Revista Portuguesa de Ortopedia e Traumatologia

Print version ISSN 1646-2122


ROBLES, Diogo Santos et al. Tumor Tenossinovial de Células Gigantes extra-articular do joelho: caso clínico. Rev. Port. Ortop. Traum. [online]. 2015, vol.23, n.4, pp.338-344. ISSN 1646-2122.

Giant tenosynovial cell tumours, also known as giant cell tumours of the tendon sheath, are benign proliferative lesions of uncertain aetiology and slow growth, arising from the synovial tissue of tendon sheaths, joints, bursae and tendon surrounding fibrous tissue, usually in the appendicular skeleton. They amount to 1.6% of all soft tissue tumours and generally in the 30-50 years of age range, with a higher prevalence in women. They are a known entity whose diagnosis usually arises in patients with small swellings within the volar side of the fingers, given that 85% of these tumours are located at this level. At the level of large joints, its estimated incidence is 12% and, in these locations they can assume larger dimensions. Although a benign tumour, it has a high recurrence rate, so treatment should always contemplate a complete surgical excision without lesion fragmentation. We present a case report of a 53 years old male patient, with a suspected meniscal injury, whose magnetic resonance presented with a large dimension nodular tumour, nodular, extra-articular, within Hoffa´s fat. The needle aspiration biopsy showed a Giant Tenosynovial Cell Tumour, and patient underwent open surgical excision of the tumour, with resolution of the pain complaints.

Keywords : Giant tenosynovial cell tumour; extra-articular; Knee; tendon sheath; differential diagnosis; surgical treatment.

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