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Case 72

A 80-year-old female was found to have a large peritoneal mass that involving the colon.


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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

The correct answer is C.

Author: Wangpan Shi, MD



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