Immunohistochemical staining showed cytokeratin(CK),epithelial membrane antigen(EMA),vimentin(Vim),S-100 was positive. Conclusion:Epithelioid sarcoma is an unusual malignant tumor.

• 免疫组化示细胞角蛋白(Cytokeratin,CK),上皮膜抗原(epithelial membrane antigen,EMA),波形蛋白(vimentin,Vim),和S-100蛋白(S-100)阳性。