We report a case of primary mucinous adenocarcinoma of the renal pelvis associated with carcinoembryonic antigen (CEA) production. A 48-year-old woman was incidentally found to have an elevated serum CEA level. A series of examinations revealed a fat-containing tumor in the left kidney and excluded tumors in other sites. Radical nephrectomy was performed, and the histopathologic examination revealed a mucinous adenocarcinoma that was strongly positive for CEA. Postoperatively, her serum CEA level gradually returned to the normal range, and she had had no recurrence by 9 months postoperatively.
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Ho, C. H., Lin, W. C., Pu, Y. S., Yu, H. J., & Huang, C. Y. (2008). Primary Mucinous Adenocarcinoma of Renal Pelvis with Carcinoembryonic Antigen Production. Urology, 71(5). https://doi.org/10.1016/j.urology.2007.11.069