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Updated: Mar 15, 2026

Endoscopic Cholesteatoma Surgery
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Cholesteatoma in ectopic kidney.

Yasemin Yuyucu Karabulut1, Mesut Tek2, Neslihan Eti1

  • 1Department of Pathology, Mersin University School of Medicine, Mersin, Turkey.

Turkish Journal of Urology
|September 17, 2016
PubMed
Summary

Urinary system cholesteatoma is a rare benign condition. This case describes cholesteatoma in an ectopic kidney, a previously undocumented occurrence.

Keywords:
Ectopic kidneycholesteatomarenal pelvis

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Area of Science:

  • Urology
  • Pathology

Background:

  • Cholesteatoma of the urinary system is a rare benign condition.
  • First described by Rosina in 1953, it involves keratinization and squamous metaplasia of urothelial epithelium.
  • The most common symptom is flank pain due to keratinous material elimination.

Purpose of the Study:

  • To report a unique case of cholesteatoma in an ectopic kidney.
  • To contribute to the limited literature on urinary system cholesteatoma.

Main Methods:

  • Case report presentation.
  • Histopathological analysis of the lesion.

Main Results:

  • Cholesteatoma was identified in an ectopic kidney.
  • The histopathological findings were consistent with cholesteatoma.

Conclusions:

  • This is the first reported instance of cholesteatoma occurring in an ectopic kidney.
  • Further research may be needed to understand the specific mechanisms and implications of cholesteatoma in ectopic renal tissue.