Final diagnosis: 腮裂囊肿 (with extensive lymphoid tissue)

Cystic lesion of neck can be difficult on frozen section diagnosis.  Possible differential diagnoses are:

1. Nodal metastatic squamous cell carcinoma with extensive cystic change

2. Nodal metastatic papillary thyroid carcinoma

3. Thyroglossal duct cyst

4. Bronchial cleft cyst

5. Epidermal inclusion cyst

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Please share your interesting frozen case and experience!

Can someone tell me what's "腮裂囊肿" in English? Is it "bronchial cleft cyst"? Thanks.  

把被覆的上皮，来个高倍...Here it is!

名称：图1
描述：图1

名称：图2
描述：图2