免疫组化：Myoglobin—、Vimentin+、EMA—、desmin—、SMA局灶阳性、Myogenin局灶阳性、MyoD1弥漫阳性。

 

最后诊断：（左上牙龈）胚胎性横纹肌肉瘤

滑膜肉瘤？

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什么都说完了，我完全赞同！位置稍微变动一下：2在1前面,4排第3

  感谢zhouquan网友的关心！ 本例读片会于10月28日举行，届时我会第一时间上传免疫组化图片及诊断结果。

 

考虑1MPNST，2平滑肌肉瘤，期待免疫组化。