title: Erythropoietin-producing renal cell carcinoma in chronic hemodialysis patients: a report of two cases.
abstract: Erythropoietin (EPO)-producing renal cell carcinomas in two hemodialysis patients are reported. Despite deteriorated kidney function, these patients did not manifest anemia at diagnosis and their elevated serum EPO levels rapidly returned to within the normal range after nephrectomy. Immunohistochemical staining of the resected specimens showed production of erythropoietin in the tumor cells in one case and in the lining cells of the cyst wall in the other case. Renal cell carcinoma could cause an increase of blood hematocrit level in dialysis patients.
authors.affiliation: Department of Urology, Graduate School of Medicine, Chiba University, Chiba City, Japan.
authors.forename: Shinichi
authors.initials: S
authors.lastname: Sakamoto
authors.forename: Tatsuo
authors.initials: T
authors.lastname: Igarashi
authors.forename: Nobuyuki
authors.initials: N
authors.lastname: Osumi
authors.forename: Takashi
authors.initials: T
authors.lastname: Imamoto
authors.forename: Toyofusa
authors.initials: T
authors.lastname: Tobe
authors.forename: Makoto
authors.initials: M
authors.lastname: Kamiya
authors.forename: Haruo
authors.initials: H
authors.lastname: Ito
mesh_terms: D002292:Carcinoma, Renal Cell / Q000378:metabolism* / Q000473:pathology; D004921:Erythropoietin / Q000096:biosynthesis* / Q000097:blood; D006801:Humans; D007150:Immunohistochemistry; D007680:Kidney Neoplasms / Q000378:metabolism* / Q000473:pathology; D008297:Male; D008875:Middle Aged; D009392:Nephrectomy; D006435:Renal Dialysis
chemical_list: D004921:Erythropoietin