SMARCB1-deficient renal medullary carcinoma
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| SMARCB1-deficient renal medullary carcinoma | |
|---|---|
| Diagnosis in short | |
| LM DDx | collecting duct carcinoma, yolk sac tumour |
| IHC | INI1 -ve, vimentin +ve, EMA +ve |
| Gross | well-circumscribed mass in renal medulla |
| Site | kidney, medulla - see kidney tumours |
|
| |
| Associated Dx | sickle cell disease or sickle cell trait |
| Clinical history | usu. young adults |
| Prevalence | rare |
| Prognosis | poor |
Renal medullary carcinoma, abbreviated RMC, is a rare malignant kidney tumour associated with sickle cell trait and a poor prognosis.
General
- Rare.
- Usually young adults.
- Associated with sickle cell trait (heterozygotes for the sickle cell allele)[1] or sickle cell disease.[2]
- Aggressive/poor prognosis.[3]
- Closely related to collecting duct carcinoma.[4]
Aside:
- Kidney disease associated with sickle cell disorders:[1]
- Papillary necrosis.
- Nephrotic syndrome.
- Renal infarction.
- Pyelonephritis.
Gross
Features:[3]
- Well circumscribed.
- Renal medulla.
Microscopic
- Variable architecture:
- Reticular - classic.
- Adenoid cystic carcinoma-like appearance:
- Cystic spaces.
- Yolk sac-like.
- Tubular.
- Desmoplastic stroma - prominent.
- Inflammation:
- Lymphocytes.
- Neutrophils - margination in vessels.
DDx:
Images
- RMC (nature.com).
- RMC - low mag. (nature.com).[5]
- RMC - high mag. (nature.com).[5]
- RMC with yolk sac-like morphology (nature.com).[5]
IHC
Features:[2]
- SMARCB1 (INI1) -ve.[6]
- Vimentin +ve.
- EMA +ve.
- CAM5.2 +ve.
- AE1/AE3 +ve.
See also
References
- ↑ 1.0 1.1 1.2 Davis CJ, Mostofi FK, Sesterhenn IA (January 1995). "Renal medullary carcinoma. The seventh sickle cell nephropathy". Am. J. Surg. Pathol. 19 (1): 1–11. PMID 7528470.
- ↑ 2.0 2.1 Cheng JX, Tretiakova M, Gong C, Mandal S, Krausz T, Taxy JB (June 2008). "Renal medullary carcinoma: rhabdoid features and the absence of INI1 expression as markers of aggressive behavior". Mod. Pathol. 21 (6): 647–52. doi:10.1038/modpathol.2008.44. PMID 18327209.
- ↑ 3.0 3.1 3.2 Watanabe, IC.; Billis, A.; Guimarães, MS.; Alvarenga, M.; de Matos, AC.; Cardinalli, IA.; Filippi, RZ.; de Castro, MG. et al. (Sep 2007). "Renal medullary carcinoma: report of seven cases from Brazil.". Mod Pathol 20 (9): 914-20. doi:10.1038/modpathol.3800934. PMID 17643096. http://www.nature.com/modpathol/journal/v20/n9/full/3800934a.html. Cite error: Invalid
<ref>tag; name "pmid17643096" defined multiple times with different content Cite error: Invalid<ref>tag; name "pmid17643096" defined multiple times with different content - ↑ Calderaro J, Moroch J, Pierron G, et al. (September 2012). "SMARCB1/INI1 inactivation in renal medullary carcinoma". Histopathology 61 (3): 428–35. doi:10.1111/j.1365-2559.2012.04228.x. PMID 22686875.
- ↑ 5.0 5.1 5.2 Srigley, JR.; Delahunt, B. (Jun 2009). "Uncommon and recently described renal carcinomas.". Mod Pathol 22 Suppl 2: S2-S23. doi:10.1038/modpathol.2009.70. PMID 19494850.
- ↑ Humphrey, Peter A; Dehner, Louis P; Pfeifer, John D (2008). The Washington Manual of Surgical Pathology (1st ed.). Lippincott Williams & Wilkins. pp. 286. ISBN 978-0781765275.