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| ==Papillary adenoma of the kidney== | | ==Papillary adenoma of the kidney== |
| *[[AKA]] ''renal papillary adenoma''. | | *[[AKA]] ''renal papillary adenoma''. |
| ===General===
| | {{Main|Papillary adenoma of the kidney}} |
| *Benign.
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| *Considered a precursor for ''[[papillary renal cell carcinoma]]'' (PaRCC).<ref name=pmid17056094>{{Cite journal | last1 = Wang | first1 = KL. | last2 = Weinrach | first2 = DM. | last3 = Luan | first3 = C. | last4 = Han | first4 = M. | last5 = Lin | first5 = F. | last6 = Teh | first6 = BT. | last7 = Yang | first7 = XJ. | title = Renal papillary adenoma--a putative precursor of papillary renal cell carcinoma. | journal = Hum Pathol | volume = 38 | issue = 2 | pages = 239-46 | month = Feb | year = 2007 | doi = 10.1016/j.humpath.2006.07.016 | PMID = 17056094 }}</ref>
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| **Stains like PaRCC.
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| **Found with an increased frequency within the content of PaRCC.
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| ===Microscopic===
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| Features:
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| #Histomorphology of ''[[papillary renal cell carcinoma]]''.
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| #'''''Must''''' be <=0.5 cm.<ref name=Ref_GUP288>{{Ref GUP|288}}</ref><ref name=pmid18846240>{{Cite journal | last1 = Algaba | first1 = F. | title = Renal adenomas: pathological differential diagnosis with malignant tumors. | journal = Adv Urol | volume = | issue = | pages = 974848 | month = | year = 2008 | doi = 10.1155/2008/974848 | PMID = 18846240 | PMC = 2563151 | URL = http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2563151/?tool=pubmed }}</ref>
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| #*[[Diagnostic size cutoff]] - larger lesions are ''papillary renal cell carcinoma''.
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| DDx:
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| *[[Papillary renal cell carcinoma]].
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| *[[Metanephric adenoma]].
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| Images:
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| *[http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2563151/figure/fig2/ Renal papillary adenoma (nih.gov)].<ref name=pmid18846240/>
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| ===IHC===
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| *AMACR +ve.<ref name=pmid17056094/>
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| ==Renal oncocytoma== | | ==Renal oncocytoma== |