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３４例滑膜肉瘤，按ＷＨＯ１９６９年分型：双相型１４例，梭形细胞型１２例，上皮细胞型８例。免疫组化结果：Ｋｅｒａｔｉｎ阳性率７７．４％，Ｖｉｍｅｎｔｉｎ８０．６％。两者联合应用，对滑膜肉瘤特别是梭形细胞型的诊断和鉴别诊断很有价值。肥大细胞在滑膜肉瘤中是常见的，其阳性率为９１．１７％（３１／３４例）。但它的出现没有一定的规律性。滑膜肉瘤中钙化灶的多少与组织学类型有关，随着上皮成分的增加而增多。
34 cases of synovial sarcoma were classified according to WHO 1969: 14 cases of bipolar type, 12 cases of spindle cell type, and 8 cases of epithelial cell type. Immunohistochemical results: The positive rate of Keratin was 77.4% and Vimentin was 80.6%. The combination of the two is valuable for the diagnosis and differential diagnosis of synovial sarcoma, especially spindle cell type. Mast cells are common in synovial sarcoma with a positive rate of 91.17% (31/34). However, its appearance does not have a certain degree of regularity. The number of calcifications in synovial sarcoma is related to the histological type and increases with the increase of epithelial components.