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[Multifocal renal oncocytoma: a case report]

S Fukuzawa1, K Oishi, H Takeuchi

  • 1Department of Urology, Faculty of Medicine, Kyoto University.

Hinyokika Kiyo. Acta Urologica Japonica
|February 1, 1993
PubMed
Summary

This case report details multifocal renal oncocytoma in a 55-year-old man. The study contributes to the understanding of this rare kidney tumor, with 42 reported cases including this one.

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Area of Science:

  • Nephrology
  • Oncology
  • Pathology

Background:

  • Renal oncocytomas are benign kidney tumors, typically solitary. Multifocal and bilateral presentations are rare, posing diagnostic and management challenges.
  • This report focuses on a specific case to expand the literature on multifocal renal oncocytoma.

Observation:

  • A 55-year-old male presented with left renal tumors detected during examination.
  • Computerized tomographic (CT) scanning and magnetic resonance imaging (MRI) identified two distinct masses in the left kidney.

Findings:

  • Surgical resection (left radical nephrectomy) revealed two tumors.
  • Histopathological examination, including light and electron microscopy, confirmed both masses as renal oncocytomas.
  • This case represents the 42nd reported instance of multifocal or bilateral renal oncocytoma in medical literature.

Implications:

  • This case adds to the limited data on multifocal renal oncocytoma, aiding in understanding its clinical presentation.
  • Further discussion on the clinical features of multifocal and bilateral renal oncocytomas is provided, potentially guiding future diagnostic and treatment strategies.

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