Cystic nephroma: Difference between revisions
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*cystic [[renal cell carcinoma]] | *cystic [[renal cell carcinoma]] | ||
*other [[renal cyst]]s | *other [[renal cyst]]s | ||
==References== | ==References== | ||
{{reflist}} | {{reflist|2}} | ||
{{Urologic neoplasia}} | {{Urologic neoplasia}} | ||
Revision as of 15:04, 29 October 2015
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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]
Overview
A cystic nephroma, also known as multilocular cystic nephroma, mixed epithelial stromal tumour (MEST) and renal epithelial stromal tumour (REST),[1] is a type of rare benign kidney tumour.
Symptoms
Cystic nephromas are often asymptomatic. They are typically discovered on medical imaging incidentally (i.e. an incidentaloma).
Diagnosis
Cystic nephromas are diagnosed by biopsy or excision. It is important to correctly diagnose them as, radiologically, they may mimic the appearance of a renal cell carcinoma that is cystic.[2]
Pathologic diagnosis
The characteristics of cystic nephromas are:
- Cysts lined by a simple epithelium with a hobnail morphology, i.e. the nuclei of the cyst lining epithelium bulges into the lumen of the cysts,
- Ovarian-like stroma that has a:
- Spindle cell morphology, and has a
- Basophilic cytoplasm.
Cystic nephromas have an immunostaining pattern like ovarian stroma; they are positive for:
Differential diagnosis
- cystic partially differentiated nephroblastoma
- cystic standard nephroblastoma (cystic Wilm's tumor)
- cystic mesoblastic nephroma
- cystic renal cell carcinoma
- other renal cysts
References
- ↑ Turbiner J, Amin MB, Humphrey PA, et al. (April 2007). "Cystic nephroma and mixed epithelial and stromal tumor of kidney: a detailed clinicopathologic analysis of 34 cases and proposal for renal epithelial and stromal tumor (REST) as a unifying term". Am. J. Surg. Pathol. 31 (4): 489–500. doi:10.1097/PAS.0b013e31802bdd56. PMID 17414095.
- ↑ Small JE et al. Cystic Nephroma. BrighamRAD Teaching Case Database. URL: http://brighamrad.harvard.edu/Cases/bwh/hcache/385/full.html. Accessed: July 25, 2009.