Metastatic duodenal carcinoma simulating primary mucinous tumor of the ovary.

Case report: We report a case of metastatic duodenal carcinoma simulating a primary ovarian mucinous tumor, occurring in a 53-year-old woman who had undergone pancreatoduodenectomy for duodenal adenocarcinoma approximately 18 months previously. The surgically removed bilateral ovaries revealed multicystic tumors. Histological examination showed they closely mimicked primary ovarian mucinous tumors. Immunohistochemical examination using cytokeratin 7 and 20, and CA 125 indicated that the bilateral ovarian tumors were metastasis from duodenal carcinoma. Conclusions: Duodenal carcinoma can be a rare primary focus of metastatic tumor simulating primary ovarian neoplasm. [ABSTRACT FROM AUTHOR]