Synovialosarcome du genou évoquant une pathologie méniscale latérale. À propos d’un cas - 22/02/18
Intra-articular synovial sarcoma of the knee rising from a lateral meniscus. A case report
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Abstract |
Synovial sarcoma (SS) is a rare mesenchymal tumor, accounting less than 10 % of soft tissue sarcomas. We report a case of intra-articular SS mimicking nodular synovitis and lateral meniscus rupture. Due to clinical and radiological presentation, arthroscopic synovectomy was performed, and histology confirmed nodular synovitis. After four years the lesion recurred and new arthroscopic biopsy was performed, revealing a monophasic SS with SYT/SSX1 translocation. Repeated histology of the first specimen confirmed appearance of a nodular synovitis microscopically, with no morphological criteria for a sarcoma, but molecular analysis showed positive SYT/SSX1 translocation. Wide extra-articular knee resection and reconstruction with a tumor megaendoprosthesis-allograft composite was performed with a negative tumor margins. This case report showed that in a case of benign histological appearance, underlying sarcoma is possible and could be identified in early stages only with an advanced pathology methods.
Level of evidence |
Level IV historical case.
Le texte complet de cet article est disponible en PDF.Keywords : Synovial sarcoma, Diagnostic molecular pathology, Arthroscopy, Knee prosthesis
☆ | Cet article peut être consulté in extenso dans la version anglaise de la revue Orthopaedics & Traumatology: Surgery & Research sur Science Direct (sciencedirect.com) en utilisant le DOI ci-dessus. |
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