Inverted urothelial papilloma - Revision history

Michael: /* Micro */

2025-06-23T21:38:46Z

Micro

← Older revision		Revision as of 21:38, 23 June 2025
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	===Micro===		===Micro===
	The sections show urothelial mucosa with a densely packed urothelial nests with peripheral palisading. The cells of the urothelial nests are bland. Proliferative activity is not apparent. Definite papillae are absent. No exophytic component is apparent.		The sections show urothelial mucosa with densely packed urothelial nests with peripheral palisading. The cells of the urothelial nests are bland. Proliferative activity is not apparent. Definite papillae are absent. No exophytic component is apparent.

	==References==		==References==

Michael: /* Sign out */ +micro

2021-06-07T18:41:56Z

Sign out: +micro

← Older revision		Revision as of 18:41, 7 June 2021
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	- Inverted papilloma.		- Inverted papilloma.
	</pre>		</pre>

			===Micro===
			The sections show urothelial mucosa with a densely packed urothelial nests with peripheral palisading. The cells of the urothelial nests are bland. Proliferative activity is not apparent. Definite papillae are absent. No exophytic component is apparent.

	==References==		==References==

Michael: /* See also */ +SO

2021-06-07T18:38:09Z

Michael: /* See also */

2015-04-25T04:19:38Z

Michael: /* Images */

2015-02-22T06:40:31Z

Images

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	===Images===		===Images===
			====Case 1====
	<gallery>		<gallery>
	Image:Inverted_papilloma_high_mag.jpg \| Inverted papilloma - high mag. (WC/Nephron)		Image:Inverted_papilloma_high_mag.jpg \| Inverted papilloma - high mag. (WC/Nephron)
	Image:Inverted_papilloma_intermed_mag.jpg \| Inverted papilloma - intermed. mag. (WC/Nephron)		Image:Inverted_papilloma_intermed_mag.jpg \| Inverted papilloma - intermed. mag. (WC/Nephron)
			</gallery>
			====Case 2====
			<gallery>
			Image: Bladder inverted papilloma histopathology (1).jpg \| IUP. (WC/KGH)
			Image: Bladder inverted papilloma histopathology (2).jpg \| IUP. (WC/KGH)
			Image: Bladder inverted papilloma histopathology (3).jpg \| IUP. (WC/KGH)
	</gallery>		</gallery>

Michael: remove space

2014-11-28T21:53:57Z

remove space

← Older revision		Revision as of 21:53, 28 November 2014
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	\| Tx =		\| Tx =
	}}		}}

	'''Inverted urothelial papilloma''', also '''inverted papilloma''', is a benign [[urothelium\|urothelial]] lesion that may be confused with [[urothelial carcinoma]].		'''Inverted urothelial papilloma''', also '''inverted papilloma''', is a benign [[urothelium\|urothelial]] lesion that may be confused with [[urothelial carcinoma]].

Michael: /* Microscopic */

2014-04-30T23:21:13Z

Microscopic

← Older revision		Revision as of 23:21, 30 April 2014
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	DDx:		DDx:
	*[[Low grade papillary urothelial carcinoma]] with an inverted growth pattern.		*[[Low grade papillary urothelial carcinoma]] with an inverted growth pattern.
			*[[Cystitis cystica]].

	===Images===		===Images===

Michael: +infobox

2014-04-30T23:20:16Z

+infobox

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			{{ Infobox diagnosis
			\| Name = {{PAGENAME}}
			\| Image = Inverted_papilloma_high_mag.jpg
			\| Width =
			\| Caption = Inverted urothelial papilloma. [[H&E stain]].
			\| Synonyms =
			\| Micro = like papillomas... but grow downward; '''never''' have an exophytic component; nests have peripheral palisading of nuclei - '''important'''
			\| Subtypes =
			\| LMDDx = [[low grade papillary urothelial carcinoma]] with an inverted growth pattern
			\| Stains =
			\| IHC = Ki-67 -ve, CK20 -ve, p53 -ve (rarely +ve)
			\| EM =
			\| Molecular =
			\| IF =
			\| Gross =
			\| Grossing =
			\| Site = [[urothelium]] - usu. [[urinary bladder]]
			\| Assdx =
			\| Syndromes =
			\| Clinicalhx =
			\| Signs =
			\| Symptoms =
			\| Prevalence = uncommon
			\| Bloodwork =
			\| Rads =
			\| Endoscopy =
			\| Prognosis = benign
			\| Other =
			\| ClinDDx =
			\| Tx =
			}}

	'''Inverted urothelial papilloma''', also '''inverted papilloma''', is a benign [[urothelium\|urothelial]] lesion that may be confused with [[urothelial carcinoma]].		'''Inverted urothelial papilloma''', also '''inverted papilloma''', is a benign [[urothelium\|urothelial]] lesion that may be confused with [[urothelial carcinoma]].

Michael: split out

2014-04-30T23:15:27Z

split out

← Older revision		Revision as of 23:15, 30 April 2014
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	~~#redirect~~ [[~~Urothelium#Inverted_urothelial_papilloma~~]]		'''Inverted urothelial papilloma''', also '''inverted papilloma''', is a benign [[urothelium\|urothelial]] lesion that may be confused with [[urothelial carcinoma]].

			==General==
			*May be confused with papillary urothelial carcinoma with an inverted growth pattern.

			==Microscopic==
			Features:
			*Like papillomas... but grow downward.<ref name=Ref_WMSP310>{{Ref WMSP\|310}}</ref>
			*According to THvdK,<ref>THvdK. 21 June 2010.</ref> ''inverted papillomas'' '''never''' have an exophytic component; if an exophytic component is present it is urothelial carcinoma. This is disputed by one paper from Mexico that examines two cases.<ref name=pmid19433293>{{cite journal \|author=Albores-Saavedra J, Chable-Montero F, Hernández-Rodríguez OX, Montante-Montes de Oca D, Angeles-Angeles A \|title=Inverted urothelial papilloma of the urinary bladder with focal papillary pattern: a previously undescribed feature \|journal=Ann Diagn Pathol \|volume=13 \|issue=3 \|pages=158–61 \|year=2009 \|month=June \|pmid=19433293 \|doi=10.1016/j.anndiagpath.2009.02.009 \|url=}}</ref>
			*Nests have peripheral palisading of nuclei - '''important'''.

			DDx:
			*[[Low grade papillary urothelial carcinoma]] with an inverted growth pattern.

			===Images===
			<gallery>
			Image:Inverted_papilloma_high_mag.jpg \| Inverted papilloma - high mag. (WC/Nephron)
			Image:Inverted_papilloma_intermed_mag.jpg \| Inverted papilloma - intermed. mag. (WC/Nephron)
			</gallery>

			==IHC==
			May be useful versus inverted growth pattern UCC:<ref name=pmid18043040>{{Cite journal \| last1 = Jones \| first1 = TD. \| last2 = Zhang \| first2 = S. \| last3 = Lopez-Beltran \| first3 = A. \| last4 = Eble \| first4 = JN. \| last5 = Sung \| first5 = MT. \| last6 = MacLennan \| first6 = GT. \| last7 = Montironi \| first7 = R. \| last8 = Tan \| first8 = PH. \| last9 = Zheng \| first9 = S. \| title = Urothelial carcinoma with an inverted growth pattern can be distinguished from inverted papilloma by fluorescence in situ hybridization, immunohistochemistry, and morphologic analysis. \| journal = Am J Surg Pathol \| volume = 31 \| issue = 12 \| pages = 1861-7 \| month = Dec \| year = 2007 \| doi = 10.1097/PAS.0b013e318060cb9d \| PMID = 18043040 }}</ref>
			*Ki-67 -ve.
			*CK20 -ve.
			*p53 -ve (rarely +ve).

			==See also==
			*[[Urothelium]].
			*[[Cystitis cystica]].

			==References==
			{{Reflist\|2}}

			[[Category:Urothelium]]
	[[Category:Diagnosis]]		[[Category:Diagnosis]]

Michael: redirect

2011-10-19T15:30:31Z

redirect

← Older revision		Revision as of 15:30, 19 October 2011
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	#redirect [[Urothelium#Inverted_urothelial_papilloma]]		#redirect [[Urothelium#Inverted_urothelial_papilloma]]

			[[Category:Diagnosis]]

← Older revision		Revision as of 18:38, 7 June 2021
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	*[[Urothelial papilloma]].		*[[Urothelial papilloma]].
	*[[Cystitis cystica]].		*[[Cystitis cystica]].

			==Sign out==
			<pre>
			Bladder Tumour, Transurthral Resection:
			- Inverted papilloma.
			</pre>

	==References==		==References==

← Older revision		Revision as of 04:19, 25 April 2015
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	==See also==		==See also==
	*[[Urothelium]].		*[[Urothelium]].
			*[[Urothelial papilloma]].
	*[[Cystitis cystica]].		*[[Cystitis cystica]].