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Notes: | Notes: | ||
*Subtype is an independent predictor of mortality - but adds very little to multivariate models with staging information.<ref>PMID 19076149</ref> | *Subtype is an independent predictor of mortality - but adds very little to multivariate models with staging information.<ref name=pmid19076149>{{Cite journal | last1 = Capitanio | first1 = U. | last2 = Cloutier | first2 = V. | last3 = Zini | first3 = L. | last4 = Isbarn | first4 = H. | last5 = Jeldres | first5 = C. | last6 = Shariat | first6 = SF. | last7 = Perrotte | first7 = P. | last8 = Antebi | first8 = E. | last9 = Patard | first9 = JJ. | title = A critical assessment of the prognostic value of clear cell, papillary and chromophobe histological subtypes in renal cell carcinoma: a population-based study. | journal = BJU Int | volume = 103 | issue = 11 | pages = 1496-500 | month = Jun | year = 2009 | doi = 10.1111/j.1464-410X.2008.08259.x | PMID = 19076149 }}</ref> | ||
*CCRCC tends to be worse than ChRCC and PRCC, probably due to higher incidence of mets.<ref>PMID 17886093</ref> | *CCRCC tends to be worse than ChRCC and PRCC, probably due to higher incidence of mets.<ref name=pmid17886093>{{Cite journal | last1 = Delahunt | first1 = B. | last2 = Bethwaite | first2 = PB. | last3 = Nacey | first3 = JN. | title = Outcome prediction for renal cell carcinoma: evaluation of prognostic factors for tumours divided according to histological subtype. | journal = Pathology | volume = 39 | issue = 5 | pages = 459-65 | month = Oct | year = 2007 | doi = 10.1080/00313020701570061 | PMID = 17886093 }}</ref> | ||
===IHC - is it RCC?=== | ===IHC - is it RCC?=== | ||
*RCC Ma (+), CD10 (+) -- specific for RCC<ref>{{cite journal |author=Zhou M, Roma A, Magi-Galluzzi C |title=The usefulness of immunohistochemical markers in the differential diagnosis of renal neoplasms |journal=Clin. Lab. Med. |volume=25 |issue=2 |pages=247?7 |year=2005 |month=June |pmid=15848735 |doi=10.1016/j.cll.2005.01.004 |url=}}</ref> | *RCC Ma (+), CD10 (+) -- specific for RCC<ref>{{cite journal |author=Zhou M, Roma A, Magi-Galluzzi C |title=The usefulness of immunohistochemical markers in the differential diagnosis of renal neoplasms |journal=Clin. Lab. Med. |volume=25 |issue=2 |pages=247?7 |year=2005 |month=June |pmid=15848735 |doi=10.1016/j.cll.2005.01.004 |url=}}</ref> | ||
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===Tabular comparison=== | ===Tabular comparison=== | ||
Selected common tumours of the kidney:<ref>{{Ref GUP|281-304}}</ref><ref name=pmid19494850>PMID 19494850 | Selected common tumours of the kidney:<ref>{{Ref GUP|281-304}}</ref><ref name=pmid19494850>{{Cite journal | last1 = Srigley | first1 = JR. | last2 = Delahunt | first2 = B. | title = Uncommon and recently described renal carcinomas. | journal = Mod Pathol | volume = 22 Suppl 2 | issue = | pages = S2-S23 | month = Jun | year = 2009 | doi = 10.1038/modpathol.2009.70 | PMID = 19494850 }}</ref> | ||
{| class="wikitable" | {| class="wikitable" | ||
| ||'''Clear cell RCC''' ||'''Papillary RCC<br>type 1''' ||'''Papillary RCC<br>type 2''' ||'''Chromophobe RCC<br>classic variant''' || '''Chromophobe RCC<br>eosinophilic variant''' || '''Oncocytoma''' | | ||'''Clear cell RCC''' ||'''Papillary RCC<br>type 1''' ||'''Papillary RCC<br>type 2''' ||'''Chromophobe RCC<br>classic variant''' || '''Chromophobe RCC<br>eosinophilic variant''' || '''Oncocytoma''' | ||
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===General=== | ===General=== | ||
*Mostly benign mesenchymal tumour. | *Mostly benign mesenchymal tumour. | ||
*Presentations: flank pain, hematuria, incidentaloma.<ref name=pmid18805573>PMID 18805573</ref> | *Presentations: flank pain, hematuria, incidentaloma.<ref name=pmid18805573>{{Cite journal | last1 = Seyam | first1 = RM. | last2 = Bissada | first2 = NK. | last3 = Kattan | first3 = SA. | last4 = Mokhtar | first4 = AA. | last5 = Aslam | first5 = M. | last6 = Fahmy | first6 = WE. | last7 = Mourad | first7 = WA. | last8 = Binmahfouz | first8 = AA. | last9 = Alzahrani | first9 = HM. | title = Changing trends in presentation, diagnosis and management of renal angiomyolipoma: comparison of sporadic and tuberous sclerosis complex-associated forms. | journal = Urology | volume = 72 | issue = 5 | pages = 1077-82 | month = Nov | year = 2008 | doi = 10.1016/j.urology.2008.07.049 | PMID = 18805573 }}</ref> | ||
*AMLs occur may be elsewhere in the body, e.g. liver,<ref name=pmid15498214>PMID 15498214</ref> but are most common in the kidney. | *AMLs occur may be elsewhere in the body, e.g. liver,<ref name=pmid15498214>{{Cite journal | last1 = Zhang | first1 = SH. | last2 = Cong | first2 = WM. | last3 = Xian | first3 = ZH. | last4 = Wu | first4 = WQ. | last5 = Dong | first5 = H. | last6 = Wu | first6 = MC. | title = [Morphologic variants and immunohistochemical features of hepatic angiomyolipoma.] | journal = Zhonghua Bing Li Xue Za Zhi | volume = 33 | issue = 5 | pages = 437-40 | month = Oct | year = 2004 | doi = | PMID = 15498214 }} | ||
</ref> but are most common in the kidney. | |||
===Epidemiology=== | ===Epidemiology=== | ||
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===Microscopy=== | ===Microscopy=== | ||
*Muscle. | *Muscle. | ||
*Adipose tissue - not always present.<ref name=pmid15584043>PMID 15584043</ref> | *Adipose tissue - not always present.<ref name=pmid15584043>{{Cite journal | last1 = Crapanzano | first1 = JP. | title = Fine-needle aspiration of renal angiomyolipoma: cytological findings and diagnostic pitfalls in a series of five cases. | journal = Diagn Cytopathol | volume = 32 | issue = 1 | pages = 53-7 | month = Jan | year = 2005 | doi = 10.1002/dc.20179 | PMID = 15584043 }}</ref> | ||
*Blood vessels. | *Blood vessels. | ||
====Cytologic features<ref>PMID 15584043</ref>==== | ====Cytologic features<ref name=pmid15584043>{{Cite journal | last1 = Crapanzano | first1 = JP. | title = Fine-needle aspiration of renal angiomyolipoma: cytological findings and diagnostic pitfalls in a series of five cases. | journal = Diagn Cytopathol | volume = 32 | issue = 1 | pages = 53-7 | month = Jan | year = 2005 | doi = 10.1002/dc.20179 | PMID = 15584043 }}</ref>==== | ||
*Nuclei - round/ovoid. | *Nuclei - round/ovoid. | ||
*Chromatin - bland. | *Chromatin - bland. | ||
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*SMA +ve. | *SMA +ve. | ||
*CD117 +/-. | *CD117 +/-. | ||
Additional paper: <ref name=pmid15584043 | Additional paper: <ref name=pmid15584043/> | ||
Notes: | Notes: | ||
*There is a suggestion that an ''epithelioid'' variant is more worisome,<ref>PMID 12352384</ref> but this is not the case in all studies.<ref>PMID 18852677</ref> | *There is a suggestion that an ''epithelioid'' variant is more worisome,<ref name=pmid12352384>{{Cite journal | last1 = Nelson | first1 = CP. | last2 = Sanda | first2 = MG. | title = Contemporary diagnosis and management of renal angiomyolipoma. | journal = J Urol | volume = 168 | issue = 4 Pt 1 | pages = 1315-25 | month = Oct | year = 2002 | doi = 10.1097/01.ju.0000028200.86216.b2 | PMID = 12352384 }}</ref> but this is not the case in all studies.<ref name=pmid18852677>{{Cite journal | last1 = Aydin | first1 = H. | last2 = Magi-Galluzzi | first2 = C. | last3 = Lane | first3 = BR. | last4 = Sercia | first4 = L. | last5 = Lopez | first5 = JI. | last6 = Rini | first6 = BI. | last7 = Zhou | first7 = M. | title = Renal angiomyolipoma: clinicopathologic study of 194 cases with emphasis on the epithelioid histology and tuberous sclerosis association. | journal = Am J Surg Pathol | volume = 33 | issue = 2 | pages = 289-97 | month = Feb | year = 2009 | doi = 10.1097/PAS.0b013e31817ed7a6 | PMID = 18852677 }}</ref> | ||
Ki-67 can be used to help distinguish btw 'em -- epithelioid variant Ki-67 +ve.<ref>PMID 18839327</ref> | Ki-67 can be used to help distinguish btw 'em -- epithelioid variant Ki-67 +ve.<ref name=pmid18839327>{{Cite journal | last1 = Ooi | first1 = SM. | last2 = Vivian | first2 = JB. | last3 = Cohen | first3 = RJ. | title = The use of the Ki-67 marker in the pathological diagnosis of the epithelioid variant of renal angiomyolipoma. | journal = Int Urol Nephrol | volume = 41 | issue = 3 | pages = 559-65 | month = | year = 2009 | doi = 10.1007/s11255-008-9473-1 | PMID = 18839327 }}</ref> | ||
==Xanthogranulomatous pyelonephritis== | ==Xanthogranulomatous pyelonephritis== |
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