Difference between revisions of "Succinate dehydrogenase-deficient renal cell carcinoma"
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==Microscopic== | ==Microscopic== | ||
Features:<ref name=pmid25034258/> | Features:<ref name=pmid25034258/> | ||
* | *Eosinophilic cells with clear (flocculent) cytoplasmic inclusions. ‡ | ||
*Round nuclei with mildly granular chromatin pattern. | |||
*Intratumoural [[mast cell]]s. | *Intratumoural [[mast cell]]s. | ||
*Solid architecture. | *Solid architecture. | ||
| Line 23: | Line 24: | ||
DDx: | DDx: | ||
*[[Renal oncocytoma]]. | *[[Renal oncocytoma]] - granular cytoplasm. | ||
*[[Chromophobe renal cell carcinoma]]. | *[[Chromophobe renal cell carcinoma]]. | ||
*[[Clear cell renal cell carcinoma]]. | *[[Clear cell renal cell carcinoma]]. | ||
Revision as of 01:21, 26 March 2015
Succinate dehydrogenase-deficient renal cell carcinoma, also succinate dehydrogenase renal cell carcinoma (abbreviated SDH-RCC), is a very rare type of renal cell carcinoma.
It is grouped in the emerging entities of the Vancouver modification of the 2004 WHO classification of renal neoplasia.[1]
General
- Extremely rare - only approximately 10 cases described as of 2012.[1]
- May be assocated with paraganglioma (as with several SDH mutations).
- Primarily described with a SDHB mutation.[2]
Gross
- Commonly cystic.
Microscopic
Features:[2]
- Eosinophilic cells with clear (flocculent) cytoplasmic inclusions. ‡
- Round nuclei with mildly granular chromatin pattern.
- Intratumoural mast cells.
- Solid architecture.
Notes:
- ‡ Occasional cells may look like signet ring cells.
DDx:
- Renal oncocytoma - granular cytoplasm.
- Chromophobe renal cell carcinoma.
- Clear cell renal cell carcinoma.
Images
- SDHB-RCC - poor quality histology image (nih.gov).[3]
- SDHC-RCC (nih.gov).[3]
- SDH-deficient RCC (nature.com).[2]
IHC
Features:
- SDHB -ve (11 of 11 cases[2]).
- CD117 -ve - important.
See also
References
- ↑ 1.0 1.1 Srigley, JR.; Delahunt, B.; Eble, JN.; Egevad, L.; Epstein, JI.; Grignon, D.; Hes, O.; Moch, H. et al. (Oct 2013). "The International Society of Urological Pathology (ISUP) Vancouver Classification of Renal Neoplasia.". Am J Surg Pathol 37 (10): 1469-89. doi:10.1097/PAS.0b013e318299f2d1. PMID 24025519.
- ↑ 2.0 2.1 2.2 2.3 2.4 Williamson, SR.; Eble, JN.; Amin, MB.; Gupta, NS.; Smith, SC.; Sholl, LM.; Montironi, R.; Hirsch, MS. et al. (Jan 2015). "Succinate dehydrogenase-deficient renal cell carcinoma: detailed characterization of 11 tumors defining a unique subtype of renal cell carcinoma.". Mod Pathol 28 (1): 80-94. doi:10.1038/modpathol.2014.86. PMID 25034258. Cite error: Invalid
<ref>tag; name "pmid25034258" defined multiple times with different content - ↑ 3.0 3.1 3.2 Ricketts, CJ.; Shuch, B.; Vocke, CD.; Metwalli, AR.; Bratslavsky, G.; Middelton, L.; Yang, Y.; Wei, MH. et al. (Dec 2012). "Succinate dehydrogenase kidney cancer: an aggressive example of the Warburg effect in cancer.". J Urol 188 (6): 2063-71. doi:10.1016/j.juro.2012.08.030. PMID 23083876.