Difference between revisions of "Papillary renal cell carcinoma"

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| Caption    = Papillary renal cell carcinoma. [[H&E stain]].
| Caption    = Papillary renal cell carcinoma. [[H&E stain]].
| Micro      = cuboidal or low columnar cells (simple or pseudostratified) on papillae, interstitial foam cells in the vascular cores
| Micro      = cuboidal or low columnar cells (simple or pseudostratified) on papillae, interstitial foam cells in the vascular cores
| Subtypes  = type 1, type 2, oncocytic variant
| Subtypes  = no ''World Health Organization'' recognized subtypes; defunct subtypes: "type 1" and "type 2", oncocytic variant
| LMDDx      = [[clear cell renal cell carcinoma]], [[clear cell papillary renal cell carcinoma]], [[metanephric adenoma]] (esp. solid PaRCC type 1), [[collecting duct carcinoma]] (esp. PaRCC type 2), [[renal papillary adenoma]], [[acquired cystic disease-associated renal cell carcinoma]], [[urothelial carcinoma]], [[renal mucinous tubular and spindle cell carcinoma]], [[ALK translocation renal cell carcinoma]]
| LMDDx      = [[clear cell renal cell carcinoma]], [[clear cell papillary renal cell carcinoma]], [[metanephric adenoma]] (esp. solid PaRCC type 1), [[collecting duct carcinoma]] (esp. PaRCC type 2), [[renal papillary adenoma]], [[acquired cystic disease-associated renal cell carcinoma]], [[urothelial carcinoma]], [[renal mucinous tubular and spindle cell carcinoma]], [[ALK translocation renal cell carcinoma]]
| Stains    =
| Stains    =
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===Histological subtyping===
===Histological subtyping===
Generally accepted subtypes:<ref name=Ref_GUP289>{{Ref GUP|289}}</ref><ref>{{Cite journal  | last1 = Delahunt | first1 = B. | last2 = Eble | first2 = JN. | title = Papillary renal cell carcinoma: a clinicopathologic and immunohistochemical study of 105 tumors. | journal = Mod Pathol | volume = 10 | issue = 6 | pages = 537-44 | month = Jun | year = 1997 | doi =  | PMID = 9195569 }}</ref>
Historically, PaRCC was subtyped:<ref name=Ref_GUP289>{{Ref GUP|289}}</ref><ref>{{Cite journal  | last1 = Delahunt | first1 = B. | last2 = Eble | first2 = JN. | title = Papillary renal cell carcinoma: a clinicopathologic and immunohistochemical study of 105 tumors. | journal = Mod Pathol | volume = 10 | issue = 6 | pages = 537-44 | month = Jun | year = 1997 | doi =  | PMID = 9195569 }}</ref>
*''Type 1'' - single layer of cells on basement membrane - '''most important'''.
*''Type 1'' - single layer of cells on basement membrane - '''most important'''.
** Usually low grade nuclear features, i.e. low [[ISUP nucleolar grade]].
** Usually low grade nuclear features, i.e. low [[ISUP nucleolar grade]].
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*** Foamy macrophages - uncommon.
*** Foamy macrophages - uncommon.
*** Cells larger.
*** Cells larger.
The WHO GU Blue Book 5th Ed. recommends against subtyping.


Another subtype:
Another subtype:
48,833

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