clear cells with nuclear atypia.  No further idea.  I would submit the entire specimen, look for mitoses or abnormal mitoses, any focal differentiation.  Call the doc to see if patient has malignancy anywhere else (metastatic clear cell tumor?).  And of course, never forget our friend in modern pathology: immunostains!  Wait to see the results.  Thanks.

 The qualities of pictures as well as the specimen itself are suboptimal for diagnosis.  The cellular composition appears to be polymorphic...I would consider lymphoproliferative or reactive process. Thanks.

 首先考虑涎腺来源的恶性肿瘤，需说没有肌上皮癌常见的巢状排列，但透明细胞＋间质胶原，首先应该排除肌上皮癌。