Difference between revisions of "Nephrogenic adenoma"
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(→IHC: more refs -- from 'metanephric adenoma' ... probably in error) |
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Features:<ref name=pmid22415059>{{Cite journal | last1 = Alexiev | first1 = BA. | last2 = Levea | first2 = CM. | title = Nephrogenic Adenoma of the Urinary Tract: A Review. | journal = Int J Surg Pathol | volume = | issue = | pages = | month = Mar | year = 2012 | doi = 10.1177/1066896912439095 | PMID = 22415059 }}</ref> | Features:<ref name=pmid22415059>{{Cite journal | last1 = Alexiev | first1 = BA. | last2 = Levea | first2 = CM. | title = Nephrogenic Adenoma of the Urinary Tract: A Review. | journal = Int J Surg Pathol | volume = | issue = | pages = | month = Mar | year = 2012 | doi = 10.1177/1066896912439095 | PMID = 22415059 }}</ref> | ||
*CK7 +ve. | *CK7 +ve. | ||
*PAX2 +ve. | *PAX2 +ve.<ref name=pmid16400326>{{Cite journal | last1 = Tong | first1 = GX. | last2 = Melamed | first2 = J. | last3 = Mansukhani | first3 = M. | last4 = Memeo | first4 = L. | last5 = Hernandez | first5 = O. | last6 = Deng | first6 = FM. | last7 = Chiriboga | first7 = L. | last8 = Waisman | first8 = J. | title = PAX2: a reliable marker for nephrogenic adenoma. | journal = Mod Pathol | volume = 19 | issue = 3 | pages = 356-63 | month = Mar | year = 2006 | doi = 10.1038/modpathol.3800535 | PMID = 16400326 }}</ref> | ||
*PAX8 +ve. | *PAX8 +ve. | ||
*AMACR +ve/-ve. | *AMACR +ve/-ve. | ||
| Line 77: | Line 77: | ||
*CEA -ve. | *CEA -ve. | ||
*Ki-67 low (<5%). | *Ki-67 low (<5%). | ||
*MUC1 +ve. | |||
**Marks distal renal tubule.<ref name=pmid19730362>{{Cite journal | last1 = Fromont | first1 = G. | last2 = Barcat | first2 = L. | last3 = Gaudin | first3 = J. | last4 = Irani | first4 = J. | title = Revisiting the immunophenotype of nephrogenic adenoma. | journal = Am J Surg Pathol | volume = 33 | issue = 11 | pages = 1654-8 | month = Nov | year = 2009 | doi = 10.1097/PAS.0b013e3181b40061 | PMID = 19730362 }}</ref> | |||
==See also== | ==See also== | ||
Revision as of 13:24, 8 November 2013
| Nephrogenic adenoma | |
|---|---|
| Diagnosis in short | |
 Nephrogenic adenoma. H&E stain. | |
|
| |
| LM | tubular structures with a microcystic appearance lined by hobnailed cells +/-thick eosinophilic basement membrane, usually associated with chronic inflammation |
| LM DDx | urothelial carcinoma microcystic and nested variants, prostatic adenocarcinoma, clear cell adenocarcinoma |
| IHC | CK7 +ve, PAX8 +ve, p53 -ve, CEA -ve, Ki-67 low (<5%) |
| Site | urothelium - usu. urinary bladder |
|
| |
| Prevalence | uncommon |
| Prognosis | benign |
Nephrogenic adenoma, also known as mesonephric adenoma,[1] and nephrogenic metaplasia, is a rare lesion that is classically in the urinary bladder and can mimic adenocarcinoma.
It should not be confused with metanephric adenoma.
General
Features:[2]
- Benign.
- May mimic adenocarcinoma!
- Classic location is the urinary bladder.
- Also reported in ureter and prostatic urethra.
- It is thought to result from displacement of renal tubular cells, as this entity in renal transplant recipients is graft derived.[3]
Microscopic
Features:[2]
- Tubular structures - key feature.
- Hobnailed cells.
- +/-Thick eosinophilic basement membrane.
- Microcystic appearance.
- Usually associated with chronic inflammation.
Notes:
- May mimic vascular/lymphatic channels - can be sorted-out with IHC.
DDx:
- Urothelial carcinoma, microcystic and nested variants.
- Prostatic adenocarcinoma.
- Clear cell adenocarcinoma.
Images
Nephrogenic adenoma - low mag. (WC/Nephron)
Nephrogenic adenoma - intermed. mag. (WC/Nephron)
Nephrogenic adenoma - high mag. (WC/Nephron)
Nephrogenic adenoma - very high mag. (WC/Nephron)
www:
IHC
Features:[5]
- CK7 +ve.
- PAX2 +ve.[6]
- PAX8 +ve.
- AMACR +ve/-ve.
Others:[2]
- p53 -ve.
- CEA -ve.
- Ki-67 low (<5%).
- MUC1 +ve.
- Marks distal renal tubule.[7]
See also
References
- ↑ Singh, KJ. (Jan 2011). "Mesonephric adenoma in remnant ureteric stump: A rare entity.". Indian J Urol 27 (1): 140-1. doi:10.4103/0970-1591.78414. PMID 21716880.
- ↑ 2.0 2.1 2.2 Gokaslan, ST.; Krueger, JE.; Albores-Saavedra, J. (Jul 2002). "Symptomatic nephrogenic metaplasia of ureter: a morphologic and immunohistochemical study of four cases.". Mod Pathol 15 (7): 765-70. doi:10.1097/01.MP.0000019578.51568.24. PMID 12118115. http://www.nature.com/modpathol/journal/v15/n7/full/3880603a.html. Cite error: Invalid
<ref>tag; name "pmid12118115" defined multiple times with different content - ↑ Mazal, PR.; Schaufler, R.; Altenhuber-Müller, R.; Haitel, A.; Watschinger, B.; Kratzik, C.; Krupitza, G.; Regele, H. et al. (Aug 2002). "Derivation of nephrogenic adenomas from renal tubular cells in kidney-transplant recipients.". N Engl J Med 347 (9): 653-9. doi:10.1056/NEJMoa013413. PMID 12200552.
- ↑ Kunju, LP. (Oct 2010). "Nephrogenic adenoma: report of a case and review of morphologic mimics.". Arch Pathol Lab Med 134 (10): 1455-9. doi:10.1043/2010-0226-CR.1. PMID 20923300.
- ↑ Alexiev, BA.; Levea, CM. (Mar 2012). "Nephrogenic Adenoma of the Urinary Tract: A Review.". Int J Surg Pathol. doi:10.1177/1066896912439095. PMID 22415059.
- ↑ Tong, GX.; Melamed, J.; Mansukhani, M.; Memeo, L.; Hernandez, O.; Deng, FM.; Chiriboga, L.; Waisman, J. (Mar 2006). "PAX2: a reliable marker for nephrogenic adenoma.". Mod Pathol 19 (3): 356-63. doi:10.1038/modpathol.3800535. PMID 16400326.
- ↑ Fromont, G.; Barcat, L.; Gaudin, J.; Irani, J. (Nov 2009). "Revisiting the immunophenotype of nephrogenic adenoma.". Am J Surg Pathol 33 (11): 1654-8. doi:10.1097/PAS.0b013e3181b40061. PMID 19730362.