Frozen section diagnosis?

Differential diagnoses??

 胆囊炎

 肉芽肿性炎可能性大

以前见过这样的病例

• It is granulomatous cholecystitis...excellent diagnosis.  

• I have seen a few such cases, on frozen section, it can be pretty tricky.

• You might worry about lymphoma, sarcomatoid carcinoma, inflammatory pseudotumor or even sarcoma.
• The key is to recognize 
1. polymorphous population of inflammatory cells 
2. recognize hitiocytes (granulomatous inflammation)
3. lack of significant pleomorphism or mitoses 

    I hope Dr.月新 or csgcsg to comment on your experience.

 除外PECOMA。