Benign cortical cyst of the kidney

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Benign cortical cyst of the kidney
Diagnosis in short

LM simple epithelial lining without atypia, may have clear cells
LM DDx kocalized cystic disease of the kidney, cystic neoplasms/renal cell carcinoma (e.g. cystic clear cell renal cell carcinoma), multicystic renal cell neoplasm of low malignant potential, other cystic kidney diseases
Gross thin-walled cyst usually filled with serous fluid, usually unilocular
Site kidney - see cystic kidney diseases

Prevalence very common
Radiology see Bosniak classification of renal cysts
Prognosis benign
Treatment none

Benign cortical cyst of the kidney is an extremely common benign kidney finding.

Benign renal cyst redirects here. A more general discussion about cysts in the kidney is in the article cystic kidney diseases.

General

  • Very common.
  • Benign.

Gross

  • Thin-walled cyst - usually filled with serous fluid.
  • Usually unilocular.

Microscopic

Features:

  • Simple epithelial lining without atypia.
  • May have clear cells.

Note:

  • Do not have clear cells within the wall of the cyst.[1]

DDx:

Images

See also

References

  1. Epstein, Jonathan I.; Netto, George J. (2014). Differential Diagnoses in Surgical Pathology: Genitourinary System (1st ed.). Wolters Kluwer. pp. 197. ISBN 978-1451189582.