title: [Extra-articular cervical synovial sarcomas. Review of the literature apropos of 2 cases].
abstract: Two cases of extra-articular synovial sarcoma are reported together with a review of the literature. The analysis of 44 cases shows that this tumor appears among young people particularly between 10 and 30 years of age and is twice more frequent among males. There can be metastasis mostly in lungs (11 times), which can sometimes appear much later (more than 10 years after the first diagnosis). The 5-year survival rate is here, 13/18; this is higher than for similar tumors located in the juxta-articular area. The great size of the tumoral nodule (more than 5 centimeters) is of a bad omen for the prognosis. As regards therapy, isolated surgical exeresis seems to have given results at least as good as these of surgery associated to radiotherapy. In all cases, the diagnosis is based on a light microscopic study which shows two tightly linked histological patterns: a proliferation of fusiform cells and glandular like formations. This feature is not definitely pathognostic and is very similar to tumors of glandular origin, with myoepithelial proliferation. Some examples could indeed be classified as extra-articular cervical synovialo-sarcoma. They could originate in pharyngeal and laryngeal mucous glands. This histogenetic hypothesis could account for the highly favorable evolution of some cases which were reported as synovialo-sarcoma.
mesh_terms: D000293:Adolescent; D000328:Adult; D000367:Age Factors; D000368:Aged; D002648:Child; D005260:Female; D006258:Head and Neck Neoplasms / Q000473:pathology* / Q000628:therapy; D006801:Humans; D008297:Male; D008875:Middle Aged; D009362:Neoplasm Metastasis; D011379:Prognosis; D013584:Sarcoma, Synovial / Q000473:pathology* / Q000628:therapy; D012737:Sex Factors
vernacular_title: Les synovialosarcomes cervicaux extra-articulaires. Revue de la littérature à propos de deux observations