考虑神经鞘瘤，

 

低倍下见结节中有些扩张的血管。部分为梭形，部分胞浆透明，呈多泡状。疑似有的胞浆内含有色素样颗粒。据此，并结合病史，也要考虑：

1）PEComa，恶性

2）软组织透明细胞肉瘤

3）伴有异源性分化的间质肉瘤或平滑肌肉瘤

间质肉瘤？还是滑膜肉瘤

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IHC :EMA+ LCK+ DES+ ACT+ 

诊断：上皮样平滑肌肉瘤。

不知楼主标记HMB-45了没？

1恶性PEComa

2间质肉瘤