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Metanephric adenoma.

H Birgisson1, G V Einarsson, M Steinarsdóttir

  • 1Department of Urology, University Hospital of lceland, Reykjavik.

Scandinavian Journal of Urology and Nephrology
|November 26, 1999
PubMed
Summary
This summary is machine-generated.

A rare kidney tumor, metanephric adenoma, was diagnosed in a 59-year-old woman. This benign tumor requires differentiation from malignant renal tumors for proper patient management.

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Area of Science:

  • Nephrology
  • Oncology
  • Pathology

Background:

  • Metanephric adenoma is a rare benign kidney neoplasm.
  • Accurate diagnosis is crucial to distinguish it from malignant renal tumors.

Observation:

  • A 59-year-old female presented with a 45 mm tan-pink renal tumor.
  • Microscopy showed small, dark cells in acini and tubules with glomeruloid infoldings.

Findings:

  • Immunohistochemical staining was positive for CAM 5.2 and AE-3.
  • Flow cytometry confirmed diploidy, and FISH analysis showed no abnormal karyotype.

Implications:

  • Metanephric adenoma has a favorable prognosis.
  • Distinguishing metanephric adenoma from renal cell carcinoma and Wilm's tumor is essential for appropriate clinical management.