title: Metanephric adenoma.
abstract: A 59-year old woman was diagnosed with a tumour in her right kidney. A nephrectomy was performed, and a 45 mm diameter tan-pink coloured tumour was found. Microscopy revealed small, dark cells in organized arrays of small round acini and tubules with glomeruloid infoldings. A diagnosis of metanephric adenoma was made. The tumour cells proved diploid on flow cytometry and immunohistochemical staining was positive for CAM 5.2 and AE-3. FISH analysis of three chromosomes did not reveal any abnormal karyotype. It is important to differentiate metanephric adenoma from renal cell carcinoma and adult Wilm's tumour, since it has a benign course.
authors.affiliation: Department of Urology, University Hospital of lceland, Reykjavik.
authors.forename: H
authors.initials: H
authors.lastname: Birgisson
authors.forename: G V
authors.initials: GV
authors.lastname: Einarsson
authors.forename: M
authors.initials: M
authors.lastname: Steinarsdóttir
authors.forename: J G
authors.initials: JG
authors.lastname: Jónasson
mesh_terms: D000236:Adenoma / Q000175:diagnosis* / Q000601:surgery; D003937:Diagnosis, Differential; D005260:Female; D006801:Humans; D007680:Kidney Neoplasms / Q000175:diagnosis* / Q000601:surgery; D008875:Middle Aged; D009392:Nephrectomy