title: [Retroperitoneal cystadenoma containing elevated concentrations of CA125 and CA19-9 in the cyst fluid: a case report].
abstract: A 67-year-old female presented with left abdominal distension. A huge retroperitoneal cystic mass, measuring over 20 cm in diameter, was found below the left kidney. The cyst was punctured percutaneously, and serous fluid was aspirated. It was noted that the concentrations of CA125 and CA19-9 in the fluid of the cyst were extremely elevated while those in the serum were normal. The cyst was resected easily without any adhesion. Microscopically, the cyst was lined with a mixture of ciliated and cuboidal serous cells and columnal mucinous cells. Immunohistochemical staining of the cyst wall proved positive for CA125 on serous cells, and for CA19-9 on mucinous cells.
authors.affiliation: Department of Urology, Obase Hospital.
authors.forename: T
authors.initials: T
authors.lastname: Sanefuji
mesh_terms: D000368:Aged; D014408:Biomarkers, Tumor / Q000032:analysis*; D018394:CA-125 Antigen / Q000032:analysis*; D018395:CA-19-9 Antigen / Q000032:analysis*; D003537:Cystadenoma / Q000378:metabolism* / Q000473:pathology; D005260:Female; D006801:Humans; D007150:Immunohistochemistry; D012186:Retroperitoneal Neoplasms / Q000378:metabolism* / Q000473:pathology
chemical_list: D014408:Biomarkers, Tumor; D018394:CA-125 Antigen; D018395:CA-19-9 Antigen