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|Micrograph of a cystic nephroma (left of image). Normal kidney is seen on the right. H&E stain.|
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:
Cystic nephromas have an immunostaining pattern like ovarian stroma; they are positive for:
- cystic partially differentiated nephroblastoma
- cystic standard nephroblastoma (cystic Wilm's tumor)
- cystic mesoblastic nephroma
- cystic renal cell carcinoma
- other renal cysts
- 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 Archived 2004-10-24 at archive.today. Accessed: July 25, 2009.