Benign cortical cyst of the kidney
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Benign cortical cyst of the kidney is an extremely common benign kidney finding.
Benign cortical cyst of the kidney | |
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Diagnosis in short | |
Benign cortical renal cyst with papillary projections. H&E stain. | |
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LM | simple epithelial lining without atypia, may have clear cells |
LM DDx | localized 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 in the renal cortex, usually filled with serous fluid, usually unilocular |
Site | kidney - see cystic kidney diseases |
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Prevalence | very common |
Radiology | simple cyst with thin wall; usually Bosniak I or II - see Bosniak classification of renal cysts |
Prognosis | benign |
Treatment | none |
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:
- Localized cystic disease of the kidney.
- Cystic neoplasms/renal cell carcinoma:
- Cystic clear cell renal cell carcinoma - thick septa with clear cells.
- Multicystic renal cell neoplasm of low malignant potential - thin septa, clear cells within stroma.
- Other cystic kidney diseases.
Images
See also
References
- ↑ Epstein, Jonathan I.; Netto, George J. (2014). Differential Diagnoses in Surgical Pathology: Genitourinary System (1st ed.). Wolters Kluwer. pp. 197. ISBN 978-1451189582.