UCSD Surgical Pathology Unknowns
A 80-year-old female was found to have a large peritoneal mass that involving the colon.
IHC
0%Pan-keratin
0%SOX10
0%S100
0%PAX8
If the tumor is positivity for WT-1, and CK7, while showing negative staining for GCDFP-15, ER, PR, CK20, CDX-2, D2-40, E-Cadherin, Calretinin, and CK5/6. What's your diagnosis?
A: colon adenocarcinoma
B: Mesothelioma
C: HG serous carcinoma
D: Metastatic carcinoma
Answer
Author: Wangpan Shi, MD
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