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| IHC = [[GATA3]] +ve, p63 +ve, CK5/6 +ve, CK34betaE12 +ve, PSA -ve | | IHC = [[GATA3]] +ve, p63 +ve, CK5/6 +ve, CK34betaE12 +ve, PSA -ve | ||
| EM = | | EM = | ||
| Molecular = not used for diagnosis; typically: 9p deletions, 17p deletions | | Molecular = not used for diagnosis; typically: 9p deletions, 17p deletions; can be [[Classification of urothelial carcinoma by immunohistochemistry|subclassified with IHC]]; [[FGFR2/FGFR3]] mutations | ||
| IF = | | IF = | ||
| Gross = | | Gross = | ||
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*[[Low-grade papillary urothelial carcinoma]]. | *[[Low-grade papillary urothelial carcinoma]]. | ||
*[[Prostate carcinoma]] - may have pseudopapillae<ref name=pmid24503758>{{cite journal |author=Gordetsky J, Epstein JI |title=Pseudopapillary features in prostatic adenocarcinoma mimicking urothelial carcinoma: a diagnostic pitfall |journal=Am. J. Surg. Pathol. |volume=38 |issue=7 |pages=941–5 |year=2014 |month=July |pmid=24503758 |doi=10.1097/PAS.0000000000000178 |url=}}</ref> - see ''[[urothelial carcinoma-like prostatic carcinoma]]''. | *[[Prostate carcinoma]] - may have pseudopapillae<ref name=pmid24503758>{{cite journal |author=Gordetsky J, Epstein JI |title=Pseudopapillary features in prostatic adenocarcinoma mimicking urothelial carcinoma: a diagnostic pitfall |journal=Am. J. Surg. Pathol. |volume=38 |issue=7 |pages=941–5 |year=2014 |month=July |pmid=24503758 |doi=10.1097/PAS.0000000000000178 |url=}}</ref> - see ''[[urothelial carcinoma-like prostatic carcinoma]]''. | ||
*[[Epithelioid angiosarcoma]] - have | *[[Epithelioid angiosarcoma]] - have intracytoplasmic lumens and interspersed red blood cells, usually have a history radiation treatment.<ref name=pmid25929352>{{cite journal |authors=Matoso A, Epstein JI |title=Epithelioid Angiosarcoma of the Bladder: A Series of 9 Cases |journal=Am J Surg Pathol |volume=39 |issue=10 |pages=1377–82 |date=October 2015 |pmid=25929352 |doi=10.1097/PAS.0000000000000444 |url=}}</ref> | ||
==Staging== | ==Staging== | ||
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=Molecular= | =Molecular= | ||
*Molecular testing usually ''not'' used for diagnosis. | |||
**Molecular subtyping can be approximated with immunostaining - see ''[[Classification of urothelial carcinoma by immunohistochemistry]]''. | |||
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